1375535 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種排列設置有鏈齒之拉鏈，例如在將該 拉鏈用於衣服左右前身之開合用時，可漂亮地精加工顯現 於該衣服表面側之拉鏈表面之外觀。 【先前技術】 先前，已知有對排列設置於拉鏈之各鏈齒之表面施予裝 飾’或使各鏈齒之形狀成為商品形狀，或形成為商標標誌 • 之形狀者（例如參照專利文獻1)。 此外，先前已知有一種立體拉鏈，其係排列設置形成有 可增加對於拉鏈寬度方向（左右方向）之橫拉強度之突緣、 及供該突緣嚙合之嵌合溝之鏈齒，在使該左右之鏈齒彼此 嗜合時，係將左右之鏈齒行表裏有階差地由滑件左右之導 入口導入’並由表裏方向及左右方向傾斜地使左右之鏈齒 行合流而嚙合（例如參照專利文獻2及3)。 專利文獻1 :國際公開第2005/101 974號手冊 鲁專利文獻2 :日本特公昭61-22961號公報 專利文獻3:日本特公昭62·4〇〇〇2號公報 【發明内容】 發明所欲解決之問題 專利文獻1所記載之拉鏈中’其鏈齒表面或形成為商品 形狀，或形成為商標標誌、，若放大來看則成為吸引使用者 注意之設計〇 . —敍而言，拉鏈之各個鏈齒係長邊為3 mm〜5 mm左古夕丄， m 义大小。因此，若從稍稍遠離之處觀看，則 140220.doc 1375535 會產生表現於鏈齒之商品形狀或標誌難以辨識之問題。 此外’先前通常使用之具備由樹脂成形所形成之鏈齒的 拉鏈、或上述專利文獻2及3所記載之立體拉鏈中，由於鏈 齒單體之形狀係呈嚙合時所必要之功能的形狀，故其外觀 明顯呈現此係拉鏈本身，係難於對其外觀施予美的佈置 者。因此，在將該拉鏈用於衣服及皮包等物品時，有產生 與該物品之設計不融合之情形的問題。 又，在先前之拉鏈中，在使固著於左右鏈帶的相對側緣 之左右之鏈齒彼此嚙合時，係藉由使左右之鏈齒在與鏈布 相同之平面内由左右方向呈γ字狀地合流，而使相互之鏈 齒彼此嚙合。如此，在僅由左右方向進行相互之鏈齒彼此 之嚙合與分離時，由於需要使鏈帶以小的曲率向左右方向 彎曲，故需要預先使排列設置於鏈布側緣之鏈齒彼此間之 間隔空出1 mm〜2 mm左右。 在使左右之鏈齒行彼此嚙合而使左右之鏈帶關閉之狀 態，上述鏈齒彼此間之間隔係在左右鏈齒行之兩側作為間 隙而交互存在。該在左右之鏈齒行存在之間隙，其存在在 衣服或皮包等物品之外觀上，成為總是提示拉鏈之存在 者。 本發明係為改善如此之先前技術而創造者，其目的在於 提供一種排列設置有鏈齒之拉鏈，該拉鏈可淡化處於唾合 狀態之左右鏈齒行的存在感’並可對其外觀進行漂亮地精 加工。 解決問題之技術手段 140220.doc 1375535 為解決上述問題，本發明 之拉鏈具備：固著於第1鏈帶 之鏈布之一側緣的第1 ’固者於第2鏈帶之一側緣之 第2鏈齒行；及料，係具有使㈣配置之前述請齒行 及第2鏈齒行插通而進行嗔合及㈣之鏈㈣㈣t 且，在將前述第1及第2鏈帶之鏈布面垂直方向的-面作為 表面、另—面作為背面時，前述P鏈齒行與第2鏈齒行之 鏈齒具有：延出有固著於前述鏈帶之表裏-對之固著腳部 的鏈齒本體部；由該鏈齒本體部向相對之鏈齒行側延出之 唾合頸部’及由該喃合頸部進—步朝向前端而膨出之喃人 頭部；由Μ㈣本體部之表面側向相對之鏈#行側延2 的表面扣止部；及形成於前述喃合頸部或唾合頭部之表面 側的背面扣止部；且’前述滑件之鍵齒引導通路且有.在 表裏方向有階差地配置之左右之導入口，其係使分離狀態 之第1鏈齒行及第2鏈齒行進入或排出者；及嚙合口其係 使嚙合狀態之第1鏈齒行及第2鏈齒行排出或進入者；前述 拉鏈之特徵在於：其係使前述第i鏈齒行之表面扣止 延出長度，比前述第2鏈齒行之表面扣止部之延出長卢 短地形成。 又，根據本發明之又一發明，其特徵在於其係使前述第 1鏈齒行及第2鏈齒行之表面側形狀成為矩形形狀。 又，根據本發明之又一發明，其特徵在於其係使前述第 1鏈齒行及第2鏈齒行之表面側形狀成為平面形狀。 發明之效果 根據本發明’藉由使在固著於第1鏈帶之相對側緣 之第】 140220.doc 1375535 鍵齒行形成的表面扣止部之延出長度，形成得比在固著於 第2鏈帶之相對側緣之第2鏈齒行形成之表面扣止部之延出 長度短’在進行左右鏈齒行彼此之嚙合時，係將延出長度 較短的第1鏈齒行從背面側、延出長度較長的第2鏈齒行從 表面側表裏有階差地導入，從表裏方向及左右方向傾斜地 使左右之鏈齒行彼此合流，而使相互之鏈齒彼此之嚙合變 得容易。而且，在使處於嚙合狀態之左右之鏈齒行彼此分 離時’係在表裏方向及左右方向傾斜地使鏈齒行彼此分 離’而使相互之鏈齒彼此之分離變得容易。 先則之通常之拉鏈中係僅利用左右方向之移動進行响合 及分離，相對於此，本發明之拉鏈係藉由採用可並用表裏 方向之移動而進行嚙合及分離之鏈齒形狀，可減少在進行 鏈齒行之嚙合及分離時之左右方向之移動。若使左右方向 之移動減少’則可增大鏈帶所要求之在鏈布平面内之最小 曲率。因此，可將排列設置於鏈布側緣之鏈齒彼此之間隔 縮小至0.3 mm〜0.7 mm左右，而較大地獲得嚙合狀態之鏈 齒表面側之專有面積。而且，由於使排列設置於鏈布側緣 之鏈齒彼此之間隔縮小，可獲得使拉鏈之存在感淡化之外 觀。 此外，藉由將第丨鏈齒行及第2鏈齒行之表面側的形狀形 成為矩形形狀，可精加工成不易聯想到拉鏈鏈齒之外觀。 而且，藉由在表面側，使其成為或附加有凹凸形狀、或附 加有雕刻、或附加有花紋、或附加有明暗層次等色彩之裝 飾面’可將拉鏈之鏈齒行用作衣服或皮包等物品之裝飾的 140220.doc 1375535 一部分。而且，可更加漂亮地精加工物品之外觀。 又，藉由使第1鏈齒行及第2鏈齒行之表面側形狀成為平 面形狀，可容易地進行喷墨印刷、及薄膜黏貼、花紋等之 熱轉印、雕刻、雷射加工等後續加工。而且，可低價提供 一種附加有更精細且鮮明花紋及標誌之拉鏈。 【實施方式】 以下就本發明之拉鏈之代表性實施形態，一面參照圖式 一面進行具體之說明。 圖1係由表面側觀看本發明之拉鏈的平面圖，係說明在 該圖之上方處於分離狀態之鏈齒行朝下方轉移至嚙合狀態 之狀態圖。圖2係圖1所示之拉鏈的左側面圖。再者，圖1 及圖2中，為便於說明鏈齒行之嚙合狀態及分離狀態，用 叙想線表不有滑件5 〇。 首先’定義在圖1及圖2所示之拉鏈10之座標系統。如圖 1所示，將第1鏈帶16及第2鏈帶17之各自的鏈布面設為χ_γ 平面。而且，在使拉鏈1〇左側之第丨鏈齒12行及右側之第2 鏈齒13行彼此嚙合時，將與該嚙合軸線平行之長向的直線 定義為Y軸，將第1鏈齒12行及第2鏈齒13行成為分離狀態 而打開之側定義為+Y方向。 然後，將圖1所示之拉鏈10之左右方向（寬度方向）定義 為X軸，將第1鏈帶16存在之左側定義為_χ方向，將第2鏈 帶17存在之右侧定義為+χ方向。 此外，如圖2所示，將拉鏈10之各鏈布之表裏方向定義 為Z軸。而且將分別形成有第1鏈齒12行之裝飾面i2F及第2 M0220.doc 印 5535 鏈齒13行之裝飾面13F的面定義為拉鏈1〇之表面，並將該 拉鏈10之表面側定義為+Z方向，因此，拉鏈1〇之背面側 為-Z方向。 拉鍵10係例如開合上衣之左右前身或皮包等開口之開合 件。如圖1所示’在構成拉鏈1〇之左右之第1鏈帶16及第2 鏈帶17之相對的側緣部，沿該側緣部形成有向鏈布之表襄 方向膨出的芯部14。以夾持此等芯部14之方式，藉由每隔 特定間隔CR排列設置多數之第1鏈齒12及第2鏈齒13而形 成左右之鏈齒行。此外’作為第1鏈齒丨2及第2鏈齒13之素 材可使用聚縮醛等樹脂成形品。 再者’詳細將於後段進行說明，根據本發明，如在圖1 之拉鍵10所示’可將第i鏈齒12及第2鏈齒13之表面形狀形 成為矩形形狀。且，可將第丨鏈齒12行及第2鏈齒13行之各 鏈齒彼此之間隔CR縮小。如此，藉由將第1鍵齒12及第2 鏈齒13之表面形狀形成為矩形形狀、或將各鏈齒彼此之間 隔CR縮小’可增大嚙合狀態之鏈齒的專有面積。而且， 對於使用者而言可獲得使拉鏈1 〇之存在感淡化之外觀。 此外，如圖1及圖2所示，拉鏈1〇具備可使第j鏈齒12行 及第2鏈齒13行插通而使上面開放之滑件5 〇。滑件5 〇具備 引導第1鏈齒12行及第2鏈齒13行之+Z側之上翼片52，及引 導第1鏈齒12行及第2鏈齒13行之-Z側之下翼片53。 為伴隨滑件50之移動而使第1鏈齒12行及第2鏈齒13行彼 此唾合起來’在滑件50之上翼片52及下翼片53之兩側緣 部’延伸設置有使雙方之鏈齒彼此由左右方向合流之凸緣 140220.doc 1375535 50F。而且，在圖1及圖2未顯示，但在延伸設置於上述上 翼片52及下翼片53之凸緣50F彼此相對之細長的間隔部 分’形成有用於使第1鏈帶16及第2鏈帶17之鏈布插通之布 帶溝。 此外，如圖2所示，在滑件50之上翼片52之+2側的表面 直立設置有安裝柱56。在安裝柱56之中央部開設有軸承孔 56A ’其係在使該滑件5〇向士γ方向移動時，旋動自如地保 持利用者所握持之拉片59之轴部者。 如圖1所示，在滑件50之内部，用於使第i鏈齒12行及第 2鏈齒13行貫通於滑件50之前後方向（+γ方向及_γ方向）的 鏈齒引導通路51，係以由左右之凸緣5〇F包圍之形式形成 為平面視之Y字形。在開口於該鏈齒引導通路5丨之+γ側之 第1導入口 50L及第2導入口 50R之中央部，配置有連結上翼 片52與下翼片53之連結柱50D。該連結柱5〇D之形狀係向_γ 侧形成尖的楔狀，故藉由使滑件5〇向_γ方向移動可使處於 嚙合狀態之第1鏈齒12與第2鏈齒13向左右方向分離。 如圖2所示，第1導入口 5〇L在第2導入口 5〇R之内面側的_ζ 側具有階差地開口。因此，第i導入口 5〇L及第2導入口 5〇R，係將處於分離狀態之左右之第1鏈齒12行與第2鏈齒 13行有階差地導入或排出。而且，在鏈齒引導通路51内形 成有用於使處於嚙合狀態之左右之第丨鏈齒12與第2鏈齒13 向表裏方向分離之表裏分離壁5〇e。 在鏈齒引導通路51之_γ側開口有嚙合口 5〇1^嚙合口 5〇τ係將嚙合之左右之第丨鏈齒12行及第2鏈齒13行向鏈齒 140220:doc 1375535 引導通路51導入或排出。 例如，在鏈齒引導通路5 1内，在使處於分離狀態之左右 之第1鏈齒12行與第2鏈齒13行嚙合時，係使滑件50向+Y方 向移動。如此則分別將處於分離狀態之第1鏈齒12行由第1 導入口 50L、第2鏈齒13行由第2導入口50R表襄有階差地導 入，在鏈齒引導通路51内使雙方之鏈齒行由表裏方向及左 右方向傾斜地合流而相互嚙合。然後，由嚙合口 50T將成 為嚙合狀態之第1鏈齒12行及第2鏈齒13行排出。 另一方面，在鏈齒引導通路51内，在使處於唾合狀態.之 左右之第1鏈齒12行與第2鏈齒13行分離時，係使滑件50 向·Υ方向移動。如此則滑件50之嚙合口 50T導入處於嚙合 狀態之第1鏈齒12行及第2鏈齒13行，在鏈齒引導通路51内 所形成之表裏分離壁50E(參照圖2)使雙方之鏈齒行向表裏 方向分離’並且，在鏈齒引導通路51内所形成之連結柱 5〇D(參照圖1)使雙方之鏈齒行向左右方向傾斜地分離。然 後，將成為分離狀態之第1鏈齒12行及第2鏈齒13行，分別 由第1導入口 50L及第2導入口 50R排出。 籲 其次，就使第1鏈齒12行及第2鏈齒13行彼此嚙合之狀態 之拉鏈10的外觀進行說明。圖3係由+Z側（表面側）觀看處 於嚙合狀態之拉鏈10之立體圖，圖4係由-Z側（背面側）觀看 之立體圖。再者，對於與圖1及圖2所示之構件相同之構 件’附加相同之符號而省略其說明。 圖3所示之實施形態中’係使第1鏈齒12及第2鏈齒13之 +Z側之裝飾面12F、13F成為矩形形狀之平面，於該處作為 140220.doc -10· 1375535 钯紋附加有「AB c」》該花紋既可預先在鏈齒成形用之模 具雕刻，亦可藉由噴墨印刷或薄膜黏貼、熱轉印、雕刻、 田射加工等後續加工而附加。如此，利用在第1鏈齒12及 第2鏈齒13之裝飾面12F、13F附加精細且鮮明的花紋或色 形，可減少拉鏈10之存在感，可將拉鏈1〇用作衣服或皮包 等物。〇之裝飾之一部分。而且，可更加漂亮地精加工衣服 或皮包等物品之外觀。 再者，圖4所示之實施形態中，第丨鏈齒12及第2鏈齒13 之側之者面係與先如市售之樹脂成形之鏈齒大致相同的 外觀。如圖4所示，拉鏈10之背面外觀係馬上會聯想到由 树月曰成形所形成的鏈齒行者。相對於此，圖3所示之第1鏈 齒12行及第2鏈齒13行之裝飾面12F、13F的外觀，係不會 馬上聯想到拉鏈1 0之存在者。 接著，利用圖5〜圖8對第！鏈齒12及第2鏈齒13之構成進 行說明。圖5係由-Y側朝向+Y側觀看第1鏈齒12之正視 圖，而圖6係由-Z側（背面側）朝向+2側（表面側）觀看第1鏈 齒12之背面圖。此外，圖7係由_γ側朝向+γ側觀看第2鏈 齒13之正視圖，而圖8係由_2側（背面側）朝向+2側（表面側） 觀看第2鏈齒13之背面圖。再者，對於與圖丨〜圖4所示之構 件相同之構件，附加相同之符號而省略其說明。 如圖5及圖6所示，第1鏈齒12具備：表裏一對之表面固 著腳部12U及背面固著腳部12V，該等係由表面側及背面 側夾入固著第1鏈帶16之鏈布及芯部14者；鏈齒本體部 12B其係使上述表面固著腳部12U尽背面固著腳部12v 140220.doc 1375535 向-x方向延出者；嚙合頸部12N，其係 尔田上述鏈齒本體部 12B向相對之第2鏈齒13行側之+χ方向延出者；及在上述 唾合頸部12Ν之前端侧膨出之嗜合頭部ι2Η。 ^ 嗜合頸部12Ν為在+Υ及_Υ侧卡入形成於相對之2個第㈣ 13之喃合頭部’形成有凹人的部分。嗜合頭部ΐ2Η係用 齒 於進入形成於相對之2個第2鏈齒13之嗔合頸部而膨出的部 分。該嚙合頸部12Ν及嚙合頭部12Η，係在將左右之第1鏈 帶16及第2鏈帶17閉合之狀態， 用於進行能承受左右方向 之橫向拉力之嚙合的嚙合部分。 此外，如圖5及圖6所示，係使由第丨鏈齒12之鏈齒本體 部12B之表面侧向第2鏈齒13行側之+χ方向延出之表面扣 止部12D，朝向·而形成。該表面扣止部12〇係向嗔合 頸部12N之+Z側、且向該嚙合頸部UN之各+γ側及_γ側之 雙方延出。 此外，在圖5所示之實施形態中，在嚙合頸部12Ν及嚙合 頭部12Η之表面側的+Ζ側，形成有朝向+ζ方向之背面扣止 部 12R » 月面扣止部12R係藉由與形成於相對之2個第2鏈齒〖3之 表面扣止部扣合，而用於阻止在嚙合狀態第丨鏈齒12相對 於第2鏈齒13向+Z方向移動而表裏方向之嚙合脫開的嚙合 用構件。 此外，表面扣止部12D係藉由與分別形成於相對之2個第 2鏈齒13之背面扣止部扣合，而用於阻止在嚙合狀態第1鏈 齒12相對於第2鏈齒13向-Z方向移動而表裏方向之嚙合脫 140220.doc 12 開的喃合部分。 如此，藉由在第1鏈齒12形成表面扣止部12D及背面扣止 部12R，在使左右之第丨鏈帶16及第2鏈帶17閉合之狀態， 可進行能承受表裏方向之剪斷力之嚙合。 再者，如圖6所示，向+χ方向延出之表面扣止部12D之 第1延出長度12L，比後述之第2鏈齒13的表面扣止部之延 出長度較短地形成。如此，藉由較短地設定表面扣止部 12D之第1延出長度12l，可減少在進行第1鏈齒12行與第2 鏈# 13行之嚙合及分離時所需之左右方向的移動。其結 果’可較窄地設定第1鏈齒12彼此及第2鏈齒13彼此之間隔 CR。 繼之’利用圖7及圖8對第2鏈齒13之單體形狀進行說 明。 如圖7及圖8所示’第2鏈齒13具備：表裏一對之表面固 著腳部13U及背面固著腳部13V，該等係由表面側及背面 側夾入固著第2鏈帶17之鏈布及芯部14者；鏈齒本體部 13B，其係使上述表面固著腳部13U及背面固著腳部13V向 +X方向延出者；嚙合頸部13N，其係由上述鏈齒本體部 13B向相對之第1鏈齒12行側之-X方向延出者；及在上述嚙 合頸部13N之前端側膨出之嚙合頭部13H。 嚙合頸部13N，為在+Y及_Y側卡入形成於相對之2個第1 鏈齒12之嚙合頭部12Η，形成有凹入的部分。嚙合頭部 13Η係用於進入形成於相對之2個第1鏈齒12之嚙合頸部 12Ν之膨出的部分。該嚙合頸部13Ν及嚙合頭部13Η，係在 140220.doc •13- 1375535 使左右之第1鏈帶I6及第—2鏈帶Ϊ7閉合之狀態，用於進行能 承受左右方向之橫向拉力之嚙合的嚙合部分。 此外’如圖7及圖8所示，係使由第2鏈齒13之鍵齒本體 部13Β之表面側向第1鏈齒12行側之-X方向延出之表面扣止 部13D，朝向-Ζ側而形成。該表面扣止部13d係向嚙合頸 部13N之+Z側、且向該嚙合頸部13N之各+Y側及-Y側之雙 方延出。 此外’在圖7所示之實施形態中，在嚙合頭部丨3H之表面 側的+Z側，形成有朝向+Z方向之背面扣止部13R。 背面扣止部13R係藉由與形成於相對之2個第1鏈齒12之 表面扣止部12D扣合，用於阻止在嚙合狀態第2鏈齒13相對 於第1鏈齒12向+Z方向移動而表裏方向之鳴合脫開的响合 用構件。 此外’表面扣止部13D係藉由與分別形成於相對之2個第 1鏈齒12之背面扣止部12R扣合’用於阻止在喃合狀態第2 鏈齒13相對於第1鏈齒12向-Z方向移動而表裏方向之嗜合 脫開的喝合部分。 如此’藉由在第2鍵齒13形成表面扣止部13D及背面扣止 部13R，在將左右之第1鏈帶16及第2鏈帶17閉合之狀態， 可進行能承受表裏方向之剪斷力之嚙合。 再者，如圖8所示’向-X方向延出之表面扣止部13〇之 第2延出長度13L，如前所述’其係較第1鏈齒12的表面扣 止部12D之第1延出長度12L較長地形成。如此，藉由較長 地設定表面扣止部13D之第2延出長度13L，可減小在使第 140220.doc • 14- 1375535 1鏈齒12行與第2鏈齒13行彼此成為嚙合狀態時之裝飾面 12F及裝飾面13F間之縫隙。而且，可將在裝飾面kf及裝 飾面13F所表現之裝飾精加工為更加連續者，而對拉鏈1〇 之外觀進行漂亮地精加工。而且，藉由較長地設定表面扣 止部13D之第2延出長度13L，可提高在對處於嚙合狀態之 第1鏈齒12行及第2鏈齒13行施加有向上推力時的耐力。 接著’利用圖9〜圖1 1對第1鏈齒12行及第2鏈齒13行彼此 之嚙合狀態進行說明。圖9係由拉鏈1 〇之背面側（_z側）觀看 • 藉由第1鏈齒12行及第2鏈齒13行之左右方向之嚙合狀態的 背面圖。圖10及圖11係由_γ側觀看藉由第1鏈齒12行及第2 鏈齒13行之表裏方向之嚙合狀態的圖，圖1〇係圖9所示之 Χ-Χ向視剖面圖，圖11係圖9所示之χΐ-χι向視剖面圖。 首先’利用圖9對第1鏈齒12行及第2鏈齒13行彼此之左 右方向的嚙合狀態進行說明◦如圖9所示，第i鏈齒12利用 其嚙合頸部12N之凹入的側面’在+丫及_γ侧卡入相對之2 I 個第2鏈齒13之嚙合頭部13Η。同樣，藉由第2鏈齒丨3利用 其喃合頸部13Ν之凹入的側面，在+γ及-γ側卡入相對之2 個第1鏈齒12之嚙合頭部12Η，進行能承受加於左右方向 (+Χ方向及-X方向）之力的嚙合。 此外’如圖9所示’將連結第1鏈齒12行之各嚙合頭部 12Η之前端彼此的直線，與連結第2鏈齒13行之各嚙合頭部 13Η之前端彼此之直線的中間直線（平行於γ軸之直線）定義 為左右方向之嚙合軸線xc。此外，將連結第丨鏈齒丨2行及 第2鏈齒13行之各固著腳部之端部彼此的2條直線之中間直 140220.doc 1375535 線（平行於γ軸之直線）’定義為鏈齒令央線FC。該鏈齒中 央線FC，在由表面側觀看拉鏈1〇時，係作為第丨鏈齒丨之行 及第2鏈齒13行之各裝飾面12f、13F之中央線的線。 本發明中，如圖6及圖8所示，係使第}鏈齒12的表面扣 止部12D之第1延出長度12L，比第2鏈齒13行之表面扣止 部13D之第2延出長度13L較短地形成。因此，藉由將鏈齒 中央線FC相較於嚙合轴線Xc向第！鏈齒12側的X方向挪 動，可使圖5及圖7顯示之裝飾面12F及裝飾面13F左右對 稱，可提高拉鏈10之美感。 接著’利用圖10及圖11對第1鏈齒12行及第2鏈齒13行彼 此之表裏方向的嚙合狀態進行說明。 如圖10所示’在喷合狀態’形成於相對之面的第1鏈齒 12之表面扣止部12D與第2鏈齒13之背面扣止部13R扣合。 藉由該扣合，可阻止第2鏈齒13相對於第1鏈齒12向+Z方向 移動而脫開。同樣，可阻止第1鏈齒丨2相對於第2鏈齒13 向-Z方向移動而脫開。 此外’如圖11所示，ϋ於相對之面的第1鏈齒12之背 面扣止部12R與第2鏈齒13之表面扣止部13D扣合。藉由該 扣合，可阻止第2鏈齒13相對於第1鏈齒12向-Ζ方向移動而 脫開。同樣，可阻止第1鏈齒12相對於第2鏈齒13向+Ζ方向 移動而脫開。如此，藉由使表面扣止部12D與背面扣止部 13R、及背面扣止部12R與表面扣止部13D沿Υ軸交互地扣 合，可進行能承受加於表裏方向之剪斷力之嗜合。 產業上之可利用性 140220.doc -16 - 1375535 本發明之拉鏈除可用於服裝類及皮包等之開合外，尚可 用於鞋、帳篷及其他之開合用途。 此外’本發明之拉鍵’其在進行左右之鍵齒行之唾合及 分離時’係由表裏方向及左右方向之雙方使左右之鏈齒行 傾斜地合流或分離，因此，與先前者比較可使用設定較大 的鏈齒嚙合頭部之膨出，且設定較深的嚙合頸部之凹入的 鏈齒。藉此，可提供提高相對於左右方向之嚙合強度，且 能承受更強橫向拉力之拉鏈。 【圖式簡單說明】 圖1係由表面側觀看本發明之拉鏈的平面圖，係說明在 該圖之上方處於分離狀態之鏈齒行朝向下方轉移至嗜合狀 態之狀態圖； 圖2係在圖1顯示之拉鏈的左側面圖； 圖3係由+Z側（表面側）觀看處於嚙合狀態之拉鏈之立體 圖； 圖4係由-Z側（背面側）觀看處於嚙合狀態之拉鏈之立體 園， 圖5係由-Y側朝向+Y侧觀看第1鏈齒之正視圖； 圖6係由-Z侧（背面側）朝向+Z側（表面側）觀看第1鏈齒之 背面圖； 圖7係由-Y側朝向+Y側觀看第2鏈齒之正視圖； 圖8係由-Z側（背面側）朝向+Z侧（表面側）觀看第2鏈齒之 背面圖； 圖9係由拉鏈之彦面側（-Z側）觀看藉由第1鏈齒行及第2鏈 I40220.doc •17· 1375535 齒行之左右方向之嚙合狀態的背面圖； 圖10係由-Υ側觀看藉由第1鏈齒行及第2鏈齒行之表裏方 向之嗜合狀態圖’係圖9所示之χ_χ向視剖面圖；及 圖11係由·Υ侧觀看藉由第1鏈齒行及第2鏈齒行之表裏方 向之嚙合狀態圖，係圖9所示之ΧΙ-ΧΙ向視剖面圖。 【主要元件符號說明】 10 拉鏈 12 第1鏈齒 12Β、13Β 鏈齒本體部 12D、13D 表面扣止部 12F 、 13F 裝飾面 12Η > 13Η 嚙合頭部 12L 第1延出長度 12Ν、13Ν 嚙合頸部 12R、13R 背面扣止部 12U > 13U 表面固著腳部 12V、13V 背面固著腳部 13 第2鏈齒 13L 第2延出長度 14 芯部 16 第1鍵帶 17 第2鍵帶 50 滑件 50D 連結柱 140220.doc -18- 1375535 50E 表裏分離壁 50F 凸緣 50L 第1導入口 50R 第2導入口 50T 响合口 51 鏈齒引導通路 52 上翼片 53 下翼片 56 安裝柱 56A 軸承孔 59 拉片 CR 間隔 140220.doc - 19-1375535 VI. Description of the Invention: [Technical Field] The present invention relates to a zipper in which sprocket teeth are arranged, for example, when the zipper is used for opening and closing of a left and right front body of a garment, it can be beautifully finished and displayed on the surface of the garment. The appearance of the zipper surface on the side. [Prior Art] Conventionally, it has been known to apply a decoration to the surfaces of the fastener elements arranged in the zipper or to make the shape of each fastener element into a commercial shape or a shape of a trademark mark (for example, refer to Patent Document 1). ). Further, there has been known a three-dimensional slide fastener which is arranged to be formed with a flange which can increase the transverse tensile strength in the width direction (left and right direction) of the zipper, and a sprocket for the fitting groove for engaging the flange. When the left and right sprocket teeth are in contact with each other, the left and right sprocket rows are introduced into the left and right introduction ports of the slider in a stepwise manner, and the left and right sprocket lines are merged and meshed by the front and rear directions and the left and right directions (for example, Refer to Patent Documents 2 and 3). Patent Document 1: International Publication No. 2005/101,974, the disclosure of which is hereby incorporated by reference in its entirety. In the zipper described in Patent Document 1, the surface of the sprocket is formed into a product shape or formed as a trademark mark, and if it is enlarged, it is a design that attracts the user's attention. The long side of the sprocket system is 3 mm~5 mm left ancient 丄, m meaning size. Therefore, if viewed from a slightly distant location, 140220.doc 1375535 will produce a problem in which the shape or logo of the fastener is difficult to identify. Further, in the above-described three-dimensional slide fasteners which are generally used and which have a fastener element formed by resin molding, or the three-dimensional slide fasteners described in Patent Documents 2 and 3, the shape of the element of the fastener element is a function necessary for meshing. Therefore, its appearance clearly shows the zipper itself, and it is difficult to give a beautiful arrangement to its appearance. Therefore, when the zipper is used for articles such as clothes and purses, there is a problem that it does not merge with the design of the article. Further, in the conventional zipper, when the left and right sprocket teeth fixed to the opposite side edges of the left and right chain belts are engaged with each other, the left and right sprocket teeth are γ in the left and right direction in the same plane as the chain cloth. The words merge in a word shape, and the mutual sprocket teeth mesh with each other. In this way, when the sprocket teeth are meshed and separated from each other only by the right and left directions, since the chain belt needs to be bent in the left-right direction with a small curvature, it is necessary to arrange the sprocket teeth arranged in the side edges of the chain cloth in advance. The interval is about 1 mm~2 mm. In a state in which the left and right element rows are engaged with each other to close the left and right chain belts, the gap between the elements is interposed as a gap on both sides of the left and right element rows. The gap between the left and right chain rows is present in the appearance of articles such as clothes or purses, and the presence of the zipper is always indicated. The present invention has been made in an effort to improve the prior art, and an object thereof is to provide a zipper arranged with a chain tooth which can lighten the presence of a left and right chain of teeth in a salivating state and can be beautiful in appearance Goblin processing. Technical Solution for Solving the Problem 140220.doc 1375535 In order to solve the above problem, the zipper of the present invention has a first 'solider side of one side of the second chain belt which is fixed to one side edge of the chain fabric of the first fastener tape. a second chain of teeth; and a material having a chain of the fourth and second chain of teeth arranged in (4) and a chain of (4) (four) t, and a chain of the first and second chains When the surface in the vertical direction of the cloth surface is the surface and the other surface is the back surface, the sprocket of the P chain tooth row and the second chain tooth row has: the extension is fixed to the surface of the chain belt - the fixing leg a sprocket body portion of the stalk; a salivating neck portion extending from the sprocket body portion toward the opposite sprocket side; and a sulking head that is swelled toward the front end by the merging neck portion;四(4) a surface fastener portion of the surface of the body portion facing the lateral side of the main body portion 2; and a back surface fastening portion formed on the surface side of the merging neck portion or the saliving head portion; and the key of the aforementioned sliding member The tooth guiding passage has a left and right introduction ports arranged in a stepped manner in the direction of the front and the bottom, and the first and second fastener elements are separated in the separated state. And the engaging port is configured to discharge or enter the first sprocket row and the second sprocket row in the engaged state; wherein the zipper is characterized in that the surface of the ith sprocket row is buckled The length is formed shorter than the extension of the surface fastener portion of the second element row. According to still another aspect of the present invention, the surface side shape of the first element row and the second element row is a rectangular shape. According to still another aspect of the invention, the surface side shape of the first sprocket row and the second sprocket row is a planar shape. EFFECTS OF THE INVENTION According to the present invention, the length of the surface fastener formed by the teeth of the first and second opposite ends of the first chain belt is formed by the length of the surface fastener portion formed by the 140240.doc 1375535 key row. The surface fastener portion formed by the second chain of the opposite side edges of the second chain belt has a short extension length. When the left and right fastener rows are engaged with each other, the first fastener row having a shorter length is extended. The second element row extending from the back side and having a long length is introduced from the surface side surface stepwise, and the left and right element rows are merged obliquely from the front and rear directions and the left and right direction, so that the mutual element teeth mesh with each other. It's easy. Further, when the sprocket rows in the meshing state are separated from each other, the sprocket rows are separated from each other in the front-rear direction and the left-right direction, and the sprocket teeth are separated from each other. In the conventional zipper, the zipper of the present invention can be combined and separated by only the movement in the left and right direction. In contrast, the zipper of the present invention can be reduced by the use of a sprocket shape that can be engaged and disengaged by the movement of the front and rear directions. The movement in the left-right direction when meshing and separating the fastener rows. If the movement in the left-right direction is reduced, the minimum curvature required in the chain plane of the chain can be increased. Therefore, the distance between the fastener elements arranged at the side edges of the chain fabric can be reduced to about 0.3 mm to 0.7 mm, and the exclusive area of the surface side of the fastener element in the engaged state can be largely obtained. Further, since the distance between the fastener elements arranged in the side edges of the chain fabric is reduced, it is possible to make the appearance of the slide fastener lighter. Further, by forming the shape of the surface side of the second sprocket row and the second sprocket row into a rectangular shape, it is possible to finish the appearance of the fastener element which is not easily associated with the fastener element. Further, the fastener element of the zipper can be used as a clothes or a bag by attaching or attaching a concave-convex shape on the surface side, or attaching a decorative surface to which a pattern or a color such as a light-dark layer is added. Part of 140220.doc 1375535 for the decoration of items. Moreover, the appearance of the article can be finished more beautifully. Further, by making the surface side shape of the first sprocket row and the second sprocket row into a planar shape, it is possible to easily perform thermal transfer, engraving, laser processing, etc., such as inkjet printing, film adhesion, and patterning. machining. Moreover, a zipper with a finer and distinctive pattern and logo can be provided at a low price. [Embodiment] Hereinafter, a representative embodiment of a slide fastener of the present invention will be specifically described with reference to the drawings. Fig. 1 is a plan view showing the zipper of the present invention viewed from the front side, showing a state in which the sprocket rows in the separated state above the figure are shifted downward to the engaged state. Figure 2 is a left side view of the zipper shown in Figure 1. Further, in Fig. 1 and Fig. 2, in order to facilitate the explanation of the meshing state and the disengagement state of the element row, the slider 5 is not used for the line drawing. First, the coordinate system of the zipper 10 shown in Figs. 1 and 2 is defined. As shown in Fig. 1, the respective chain fabric faces of the first link belt 16 and the second chain belt 17 are χ_γ planes. Further, when the second sprocket 12 row on the left side of the zipper 1 及 and the second sprocket 13 row on the right side are engaged with each other, a long straight line parallel to the meshing axis is defined as a Y axis, and the first sprocket 12 is The side in which the row and the second sprocket 13 are separated and opened is defined as the +Y direction. Then, the left-right direction (width direction) of the zipper 10 shown in FIG. 1 is defined as the X-axis, the left side of the first chain belt 16 is defined as the _χ direction, and the right side of the second chain belt 17 is defined as + χ Direction. Further, as shown in Fig. 2, the direction of the front and back of each of the links of the zipper 10 is defined as the Z-axis. Further, a surface on which the decorative surface i2F of the first sprocket 12 row and the second M0220.doc 5535 sprocket 13 row are formed is defined as the surface of the zipper 1〇, and the surface side of the zipper 10 is defined. In the +Z direction, the back side of the zipper 1〇 is in the -Z direction. The pull key 10 is, for example, an opening and closing member that opens and closes the left and right front body of the top or a bag. As shown in Fig. 1, 'the side edge portion of the first chain belt 16 and the second chain belt 17 that constitute the left and right sides of the zipper 1 is formed with a core that bulges in the direction of the surface of the chain cloth along the side edge portion. Part 14. The plurality of first sprocket 12 and second sprocket 13 are arranged at regular intervals CR so as to sandwich the core portions 14 to form left and right sprocket rows. Further, as the material of the first sprocket 2 and the second sprocket 13, a resin molded article such as polyacetal can be used. Further, the details will be described later, and according to the present invention, the surface shape of the i-th element 12 and the second element 13 can be formed into a rectangular shape as shown by the pull key 10 of Fig. 1 . Further, the distance between the respective sprocket teeth of the second sprocket 12 row and the second sprocket 13 row can be reduced by CR. In this manner, by forming the surface shapes of the first key teeth 12 and the second element teeth 13 into a rectangular shape or by narrowing the respective fastener elements by CR, the specific area of the element teeth in the meshing state can be increased. Moreover, it is possible for the user to obtain an appearance that fades the presence of the zipper 1 。. Further, as shown in FIGS. 1 and 2, the slide fastener 1 includes a slider 5 that allows the j-th chain 12 rows and the second fastener teeth 13 to be inserted to open the upper surface. The slider 5 〇 has a +Z side upper fin 52 that guides the first sprocket 12 row and the second sprocket 13 row, and guides the first sprocket 12 row and the second sprocket 13 row to the -Z side. Wing 53. In order to move the first sprocket 12 row and the second sprocket 13 row together with the movement of the slider 50, 'the two side edges of the flap 52 and the lower flap 53 are extended on the slider 50. A flange 140220.doc 1375535 50F that causes the fastener elements of both sides to merge with each other in the left-right direction. Further, although not shown in Figs. 1 and 2, the first chain belt 16 and the second chain portion are formed in the elongated space portion 'extending from the flange 50F of the upper blade 52 and the lower blade 53. The chain of the chain belt 17 is inserted into the cloth groove. Further, as shown in Fig. 2, a mounting post 56 is erected on the surface on the +2 side of the flap 52 above the slider 50. A bearing hole 56A' is opened in a central portion of the mounting post 56. When the slider 5 is moved in the direction of the gamma gamma, the shaft portion of the tab 59 held by the user is rotatably held. As shown in FIG. 1, in the inside of the slider 50, the sprocket guide for the first and second sprocket 12 rows and the second sprocket 13 to pass through the slider 50 in the front and rear directions (+γ direction and _γ direction) The passage 51 is formed in a Y-shape in plan view in a form surrounded by the left and right flanges 5〇F. A coupling post 50D that connects the upper blade 52 and the lower blade 53 is disposed at a central portion of the first introduction port 50L and the second introduction port 50R that are opened on the +γ side of the element guide passage 5A. Since the shape of the connecting post 5〇D forms a sharp wedge shape on the _γ side, the first sprocket 12 and the second sprocket 13 in the meshed state can be moved by moving the slider 5 〇 in the _γ direction. Separate in the left and right direction. As shown in Fig. 2, the first introduction port 5〇L has a stepped opening on the _ζ side of the inner surface side of the second introduction port 5〇R. Therefore, the i-th introduction port 5〇L and the second introduction port 5〇R are introduced or discharged with a step difference between the first sprocket 12 and the second sprocket 13 in the separated state. Further, in the element guide passage 51, a front and rear separation wall 5〇e for separating the right and left sprocket teeth 12 and the second element 13 in the meshing direction are formed. In the _γ side opening of the sprocket guiding passage 51, the engaging opening 5 〇 1 ^ the engaging opening 5 〇 τ is to guide the left and right sprocket 12 rows and the second sprocket 13 to the sprocket 140220: doc 1375535 The passage 51 is introduced or discharged. For example, in the element guide passage 51, when the first element 12 of the left and right sides in the separated state is meshed with the second element 13, the slider 50 is moved in the +Y direction. In this way, the first sprocket 12 in the separated state is introduced into the first inlet 50L and the second sprocket 13 from the second inlet 50R in a stepwise manner, and both sides are guided in the sprocket guiding passage 51. The sprocket rows are joined by obliquely joining in the front and rear directions and the left and right directions. Then, the first sprocket 12 and the second sprocket 13 which are in the engaged state are discharged by the engaging opening 50T. On the other hand, when the first element 12 row and the second element 13 are separated from each other in the sprocket guiding passage 51, the slider 50 is moved in the direction of the Υ. In this manner, the engagement opening 50T of the slider 50 is introduced into the first sprocket 12 row and the second sprocket 13 in the engaged state, and the front and rear separation walls 50E (see FIG. 2) formed in the sprocket guiding passage 51 are both The element rows are separated in the direction of the front and rear direction, and the connecting rods 5〇D (see FIG. 1) formed in the element guiding passages 51 are separated from each other in the left-right direction. Then, the first sprocket 12 row and the second sprocket 13 row in the separated state are discharged from the first introduction port 50L and the second introduction port 50R, respectively. Next, the appearance of the slide fastener 10 in a state in which the first sprocket 12 row and the second sprocket 13 are engaged with each other will be described. Fig. 3 is a perspective view of the zipper 10 in an engaged state viewed from the +Z side (surface side), and Fig. 4 is a perspective view as seen from the -Z side (back side). The same components as those shown in Figs. 1 and 2 are denoted by the same reference numerals, and their description is omitted. In the embodiment shown in Fig. 3, the decorative surfaces 12F and 13F on the +Z side of the first element 12 and the second element 13 are formed into a rectangular shape, and are used as 140220.doc -10·1375535 palladium. The pattern is attached with "AB c". The pattern can be engraved in advance in a mold for forming a sprocket, or can be added by subsequent processing such as inkjet printing, film bonding, thermal transfer, engraving, and field processing. By adding a fine and vivid pattern or color pattern to the decorative surfaces 12F and 13F of the first sprocket 12 and the second sprocket 13, the presence of the zipper 10 can be reduced, and the zipper 1 can be used as a clothes or a bag. Things. One of the decorations of the 〇. Moreover, the appearance of items such as clothes or purses can be finished more beautifully. Further, in the embodiment shown in Fig. 4, the side faces of the second sprocket 12 and the second sprocket 13 have substantially the same appearance as the sprocket formed by a resin which is commercially available. As shown in Fig. 4, the appearance of the back side of the zipper 10 is immediately associated with the sprocket formed by the formation of the tree. On the other hand, the appearance of the decorative surfaces 12F and 13F of the first chain 12 row and the second chain 13 row shown in Fig. 3 is not immediately associated with the existence of the zipper 10. Next, use Figure 5 to Figure 8 for the first! The configuration of the sprocket 12 and the second sprocket 13 will be described. 5 is a front view of the first element 12 viewed from the -Y side toward the +Y side, and FIG. 6 is a rear view of the first element 12 viewed from the -Z side (back side) toward the +2 side (surface side). . In addition, FIG. 7 is a front view of the second element 13 viewed from the _γ side toward the +γ side, and FIG. 8 is the second element 13 viewed from the _2 side (back side) toward the +2 side (surface side). back image. It is to be noted that the same reference numerals are given to the same members as those of the members shown in Fig. 4, and the description thereof will be omitted. As shown in FIGS. 5 and 6, the first sprocket 12 includes a pair of surface-fixing leg portions 12U and a back-side fixing leg portion 12V which are sandwiched between the front side and the back side. The chain cloth and the core portion 14 of the belt 16; the sprocket body portion 12B is such that the surface fixing leg portion 12U extends the foot portion 12v 140220.doc 1375535 to extend in the -x direction; the neck portion 12N is engaged. The sprocket main body portion 12B of the stalk is extended in the +χ direction of the row side of the second sprocket 13 and the accommodating head ι2 swelled at the end side of the smear neck 12 Η. ^ The accommodating neck 12 Ν is a portion in which the Υ 头部 形成 形成 形成 形成 形成 形成 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The accommodating head ΐ 2Η is a portion that is bulged by entering the neck formed by the opposing second sprocket 13 . The engaging neck portion 12 and the engaging head portion 12 are engaged in a state in which the left and right first link belts 16 and the second chain belt 17 are closed, and are used to engage the meshing portion capable of withstanding the lateral pulling force in the right and left direction. In addition, as shown in FIG. 5 and FIG. 6, the surface fastener portion 12D extending from the front side of the sprocket main body portion 12B of the second sprocket 12 toward the + χ direction of the second sprocket 13 side is oriented. · formed. The surface fastener portion 12 is extended to the +Z side of the neck portion 12N and to both the +γ side and the _γ side of the mesh neck portion UN. Further, in the embodiment shown in Fig. 5, the back side fastening portion 12R facing the +ζ direction is formed on the +Ζ side of the surface side of the engaging neck portion 12 and the engaging head portion 12, and the lunar surface engaging portion 12R is formed. By engaging with the surface fasteners formed on the opposite second sprocket teeth 3, the sprocket 12 is prevented from moving in the +Z direction with respect to the second sprocket 13 in the engaged state, and the front and rear directions are The engaging member that is engaged with the disengagement. Further, the surface engaging portion 12D is engaged with the back fastening portion formed on the opposite second sprocket teeth 13 to prevent the first sprocket 12 from being in the engaged state with respect to the second sprocket 13 Move in the -Z direction and the meshing direction of the mesh is removed from the 140220.doc 12 open merging portion. By forming the surface fastener portion 12D and the back surface fastener portion 12R in the first sprocket 12, the left and right third chain belts 16 and the second chain belt 17 can be closed, and the front and rear shearing directions can be performed. The engagement of the breaking force. Further, as shown in FIG. 6, the first extension length 12L of the surface fastener portion 12D extending in the +χ direction is shorter than the extension length of the surface fastener portion of the second fastener element 13 to be described later. . By setting the first extension length 12l of the surface fastener portion 12D in a short manner, it is possible to reduce the movement in the left-right direction required for the engagement and separation of the first fastener element 12 row and the second chain #13 row. . As a result, the interval CR between the first sprocket 12 and the second sprocket 13 can be set narrowly. Next, the single shape of the second element 13 will be described with reference to Figs. 7 and 8 . As shown in Fig. 7 and Fig. 8, the second sprocket 13 includes a pair of surface-fixing leg portions 13U and a back-side fixing leg portion 13V, which are sandwiched between the front side and the back side. The chain cloth and the core portion 14 of the belt 17; the sprocket body portion 13B for extending the surface fixing leg portion 13U and the back surface fixing leg portion 13V in the +X direction; engaging the neck portion 13N by The sprocket main body portion 13B extends in the -X direction toward the row side of the first sprocket 12; and the engaging head portion 13H bulges at the end side of the meshing neck portion 13N. The engaging neck portion 13N is formed with a concave portion formed by engaging the engaging head portions 12 formed on the opposite first first sprocket teeth 12 on the +Y and _Y sides. The engaging head portion 13 is for entering a bulged portion formed in the engaging neck portion 12 of the opposing two first sprocket teeth 12. The engaging neck portion 13 and the engaging head portion 13 are in a state in which the left and right first chain belts I6 and the second to fourth chain belts 7 are closed in a state of being closed at 140220.doc • 13 to 1375535 for performing lateral pulling force in the left and right direction. Engaged engagement portion. In addition, as shown in FIG. 7 and FIG. 8 , the surface fastener portion 13D extending from the surface side of the sprocket main body portion 13 of the second sprocket 13 toward the -X direction of the first sprocket 12 side is oriented. - formed on the side of the side. The surface engaging portion 13d is extended to the +Z side of the engaging neck portion 13N and to the +Y side and the -Y side of the engaging neck portion 13N. Further, in the embodiment shown in Fig. 7, the back side fastening portion 13R facing the +Z direction is formed on the +Z side of the surface side of the engaging head portion 3H. The back fastening portion 13R is engaged with the surface fastening portion 12D formed on the opposite first sprocket 12, and is used to prevent the second sprocket 13 from being in the engaged state with respect to the first sprocket 12 toward the +Z. The member that moves in the direction and the direction of the head and the head is disengaged. Further, the 'surface fastener portion 13D is engaged with the back surface fastener portion 12R formed on the two first fastener elements 12 that are respectively formed to prevent the second fastener element 13 from being aligned with the first fastener element in the merging state. The portion of the drink that is moved in the -Z direction and is disengaged in the direction of the front and back. By forming the surface fastener portion 13D and the back surface fastener portion 13R in the second key teeth 13, the first and second fastener tapes 16 and 17 can be subjected to the shearing of the front and rear directions. The engagement of the breaking force. Further, as shown in FIG. 8, the second extended length 13L of the surface engaging portion 13A extending in the -X direction is as described above, which is smaller than the surface engaging portion 12D of the first sprocket 12. The first extension length 12L is formed long. Thus, by setting the second extension length 13L of the surface fastener portion 13D for a long period of time, it is possible to reduce the engagement between the second and second fastener elements 13 of the 140220.doc • 14-1375535 1 The gap between the decorative surface 12F and the decorative surface 13F. Further, the decoration represented by the decorative surface kf and the decorative surface 13F can be finished to be more continuous, and the appearance of the zipper 1 漂亮 can be beautifully finished. Further, by setting the second extension length 13L of the surface fastener portion 13D for a long period of time, it is possible to improve the endurance when the upward thrust is applied to the first sprocket 12 row and the second sprocket 13 row in the engaged state. Next, the state in which the first sprocket 12 row and the second sprocket 13 row are meshed with each other will be described with reference to Figs. 9 to 11 . Fig. 9 is a rear view showing the meshing state of the first sprocket 12 and the second sprocket 13 in the left-right direction as viewed from the back side (_z side) of the zipper 1 。. 10 and FIG. 11 are views showing the meshing state of the front and rear directions of the first sprocket 12 and the second sprocket 13 as viewed from the _γ side, and FIG. 1 is a Χ-Χ directional cross section shown in FIG. Figure 11 is a cross-sectional view of the χΐ-χι direction shown in Figure 9. First, the meshing state of the first sprocket 12 row and the second sprocket 13 row in the left-right direction will be described with reference to Fig. 9. As shown in Fig. 9, the i-th sprocket 12 is engaged by the concave portion of the neck portion 12N. The side 'in the +丫 and _γ sides are engaged with the engaging heads 13 of the opposite 2 I second teeth 13 . Similarly, the second sprocket 3 is engaged with the concave side surface of the neck portion 13 by the second sprocket 3, and the engaging head portion 12 of the two first sprocket 12 is engaged on the +γ and -γ sides. Engagement of the force applied to the left and right direction (+Χ direction and -X direction). Further, 'as shown in Fig. 9', a straight line connecting the front ends of the respective engaging heads 12 of the first sprocket 12 in a row, and a straight line connecting the straight ends of the respective engaging heads 13 Η of the second sprocket 13 (a line parallel to the γ axis) is defined as an engagement axis xc in the left-right direction. In addition, the middle of the two straight lines connecting the ends of the fixed leg portions of the second sprocket 2 row and the second sprocket 13 row is 140220.doc 1375535 (straight line parallel to the γ axis) For the chain teeth, the central line FC. The sprocket center line FC is a line of the center line of each of the decorative surfaces 12f and 13F of the second sprocket line 13 and the second sprocket 13 line when the zipper 1 is viewed from the front side. In the present invention, as shown in FIGS. 6 and 8, the first extended length 12L of the surface fastener portion 12D of the sprocket 12 is made larger than the second fastener 13D of the second fastener 13 The extension length 13L is formed short. Therefore, by the sprocket center line FC compared to the meshing axis Xc! When the X-direction of the sprocket 12 side is moved, the decorative surface 12F and the decorative surface 13F shown in Figs. 5 and 7 can be symmetrically symmetrical, and the zipper 10 can be improved in aesthetics. Next, the meshing state of the first sprocket 12 row and the second sprocket 13 row in the front and back directions will be described with reference to Figs. 10 and 11 . As shown in Fig. 10, the surface fastener portion 12D of the first fastener element 12 formed on the opposing surface in the "spraying state" is engaged with the back surface fastener portion 13R of the second fastener element 13. By this engagement, the second element 13 can be prevented from moving in the +Z direction with respect to the first element 12 and being disengaged. Similarly, the first sprocket 2 can be prevented from moving in the -Z direction with respect to the second sprocket 13 to be disengaged. Further, as shown in Fig. 11, the back surface fastening portion 12R of the first element 12 of the opposing surface is engaged with the surface fastener portion 13D of the second element 13. By this engagement, the second element 13 can be prevented from moving away from the first element 12 in the -Ζ direction. Similarly, the first element 12 can be prevented from moving in the +Ζ direction with respect to the second element 13 and being disengaged. In this manner, the surface fastening portion 12D and the back surface fastening portion 13R, and the back surface fastening portion 12R and the surface fastening portion 13D are alternately engaged along the x-axis, thereby being capable of withstanding the shearing force applied to the front and back directions. Instinct. Industrial Applicability 140220.doc -16 - 1375535 The zipper of the present invention can be used for shoes, tents and other opening and closing purposes in addition to the opening and closing of clothing and leather bags. In addition, the 'sliding key of the present invention' combines or separates the left and right element rows obliquely from both the front and the rear directions when the left and right key teeth are spit and separated. Therefore, compared with the former. Use a larger sprocket to engage the bulge of the head and set a deeper sprocket that engages the neck. Thereby, it is possible to provide a zipper which can increase the meshing strength with respect to the right and left direction and can withstand a stronger lateral pulling force. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing a zipper of the present invention viewed from a surface side, showing a state in which a chain of teeth in a separated state above the figure is shifted downward to an indwelling state; Fig. 2 is a diagram 1 shows the left side view of the zipper; Fig. 3 is a perspective view of the zipper in the engaged state viewed from the +Z side (surface side); Fig. 4 is a three-dimensional garden of the zipper in the engaged state viewed from the -Z side (back side), Fig. 5 is a front view of the first element tooth viewed from the -Y side toward the +Y side; Fig. 6 is a rear view of the first element tooth viewed from the -Z side (back side) toward the +Z side (surface side); A front view of the second element is seen from the -Y side toward the +Y side; Fig. 8 is a rear view of the second element viewed from the -Z side (back side) toward the +Z side (surface side); The zipper side (-Z side) is a rear view of the meshing state of the first sprocket line and the second chain I40220.doc • 17·1375535 in the left and right direction; Fig. 10 is viewed from the Υ side The view of the in-line state of the first and second fastener rows is shown in FIG. 9; and FIG. The side view of the meshing state of the first sprocket row and the second sprocket row is shown in Fig. 9 as a cross-sectional view taken along the line ΧΙ-ΧΙ. [Description of main component symbols] 10 Zipper 12 1st sprocket 12Β, 13Β sprocket body part 12D, 13D Surface engaging part 12F, 13F Decorative surface 12Η > 13Η Engagement head 12L 1st extension length 12Ν, 13Ν Engagement neck Parts 12R, 13R Back fastening part 12U > 13U Surface fixing leg 12V, 13V Back fixing leg 13 Second element 13L Second extension length 14 Core 16 First key band 17 Second key band 50 Sliding member 50D connecting post 140220.doc -18- 1375535 50E front and rear separating wall 50F flange 50L first inlet 50R second inlet 50T joint port 51 sprocket guiding passage 52 upper flap 53 lower flap 56 mounting post 56A bearing Hole 59 pull tab CR interval 140220.doc - 19-