201121453 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種拉鏈，特別是關於一種具有防水性之 拉鍵。 【先前技術】 先前已知有一種防水性之拉鏈，其係於一對防水性鏈布 之對向緣部將複數個鏈齒射出成形作為鏈帶，於鏈齒之下 端、上端分別將下止擋、上止擋射出成形並安裝，且於上 止擋與下止擋之間可滑動地插通滑件。如此之拉鏈藉由利 用滑件嚙合鏈齒彼此，可密接鏈布之端面彼此，獲得防水 性及氣密性。 然而，最下端之鏈齒與下止擋之間的區域由於不存在鏈 齒，且不產生嚙合力，因此較之鏈齒彼此嚙合之區域，其 鏈布彼此之密接力較弱。因此，當有水壓或氣壓施加於其 時，會有水或空氣從最下端之鏈齒與下止擋之間的區域洩 漏之情形。 為抑制水洩漏或空氣洩漏，例如曰本特開2〇〇7_2i58i9 號公報，係將具備矩形狀之突起部之薄板構件支持於鏈布 上，使突起部之端緣與最下端之鏈窗接觸，藉此補強鍵布 之密接力較弱之最下端的鏈齒與下止擋之間的區域，提高 防水性及氣密性。作為其他手段，亦已知有藉由利用下止 播覆蓋下端部之鏈齒’提高τ止擋周邊之防水性及氣密性 的技術。 先前技術文獻 147979.doc 201121453 專利文獻 專利文獻1:日本特開2007-215819號公報 【發明内容】 發明所欲解決之問題 然而，專利文獻1所記載之拉鏈，因長時間使用會有薄 板構件剝離之情形。另—方面，覆蓋下端部之鏈齒而將下 止擋射出成形之方法，炼融之樹脂會因&出成形時之壓力 而從模具溢出形成毛邊，從而有製造困難之情形。再者， 溢出之樹脂會妨礙鏈齒之嚙合，故亦有降低製品之特性的 情形。 β鑒於上述問題點，本發明旨在提供一種容易製造、且可 提高下止檔附近之防水性及氣密性的拉鏈。 解決問題之技術手段 為解決上述問題點，本發明提供一種拉鏈，其係於一側 面具有防水結構，i包含：鏈帶，其具有沿著一對防水性 之鏈布之對向緣部而排設之複數個鏈齒；滑件，其係嗔合 及解除鏈齒；及下止擋，其係跨及鏈布之雙方而配置㈣ 齒排的下端ϋ’各個鏈齒包含：喃合頭部、由嗜合頭部 延伸之頸部、由頸部延伸之基部、及由頸部之兩側面以翼 片狀延伸之-對肩冑；下止擋係連結於最下端之鏈齒，且 於與最下端之鏈齒之喷合頭部對向之位置具備凹部，凹部 係收納最下端之鏈齒之喃合頭部的—部分，且使丄對鍵布 之端面彼此被壓接之區域露出。 本發月之拉鏈’在—實施態樣中’凹部係收納最下端之 147979.doc 201121453 鏈齒之肩部。 本發明之拉鏈，在一實施態樣中，下止擋係以覆蓋最下 端之鏈齒之基部之一部分的方式而連結。 本發明之拉鏈，在一實施態樣中，下止擋之表裏方向之 厚度係厚於鏈齒之表裏方向之厚度。 本發明之拉鏈，在一實施態樣中，於鏈齒與鏈布之端部 之間所設置之空間部，λ包含跨鏈布雙方而積層之薄 件。 本發明之拉鏈，在一實施態樣中，下止擋之上方側端部 係位於1對鏈布之端面彼此壓接之區域的上方。 發明之效果 根據本發明，可提供一種容易製造、可提高製品特性、 且可提高下止擋附近之防水性及氣密性之拉鏈。 【實施方式】 以下茲參照圖式說明本發明之實施形態。在以下圖式之 記载中，同一或類似之部分係賦與同一或類似之符號。 另，以下所示之實施形態係例示用以將本發明之技術思想 具體化之裝置或方法者，本發明之技術思想並非係將構成 零件之結構、配置等特定於下述者。 本發明之貫施形態之防水性拉鏈1，如圖1所示，具備： 鏈f 2，其具有沿著一對鏈布1〇、1〇之對向緣部11、11而 排叹之複數個鏈齒3、3a、3b ;及滑件7，其係嚙合及解除 鏈齒3、3a'3b。鏈齒3、3a、3b之排之下端配置有跨鏈布 雙方而配置之下止擋4。鏈齒3、3a、3b之排的上端分別 147979.doc 201121453 配置有上止擔6、6。 另，以下之說明中，將鏈布1〇、1〇之長度方向定義為 「上下方向」。尤其，滑件7,將為嚙合鏈齒3、3&、扑之 排而相對鏈齒3、3a、3b之排作相對移動的方向作為「上 方」，將為使鏈齒3、3a、3b之排分離而移動之方向作為 「下方」。又，將鏈布10、10之表褢方向定義為「高度方 向」。再者，將於拉鏈1之表面水平且正交於鏈布1〇、忉之 長度方向的方向作為「寬度方向」。 鏈布10具有防水結構。作為鏈布i 〇，如圖3所示，係適 宜地使用將織成或編成之帶狀構件12周圍，用包含天然咬 合成橡膠材料或者各種合成樹脂之彈性體材料所構成的防 水層13覆蓋的防水鏈布。另，本實施形態中所謂「防水結 構」是指以鏈齒3、3a、3b嚙合之狀態使左右鏈布1〇、1〇 之端面11 a彼此連接’以使成為左右鏈布丨〇、〖〇間無間隙 之狀態的結構。鏈布10由於其帶狀構件丨2之周圍是用防水 層13覆蓋’因此藉由使防水層13之端面彼此密接，可發揮 防水性、水密性、氣密性❶另，本實施形態中係記載為 「防水」，但不限於水，亦包含液體者，如包含油等者、 包含氣體者》 如圖6所示，沿著鏈布1 〇之對向緣部11，有具有可使鏈 齒3、3a、3b之製造所用之熔融樹脂通過之程度之充分大 小的複數個貫通孔8，對應於鏈齒3、3a、3b及下止擋4之 女裝位置而形成。鏈齒3、3a、3b係經由貫通孔8而一體融 著於鏈布10之表裏面上。 I47979.doc -6 - 201121453 鏈齒3、3a、3b係由熱可塑性樹脂等合成樹脂所構成。 如圖2所示’鏈齒3、3a、3b分別具備：喷合頭部31，其從 平面觀察係於鏈布10、10之長度方向具有長圓形狀；㈣ 合頭部3丨延狀頸部32;基部33,其係㈣扣延伸，且 從平面觀察具有大致六角形狀；左右一對肩部34,其係從 頸部32之兩側面向鏈布1()、1G之長度方向以翼片狀延伸，· 及2條腳部36,其係從基部33之端部向嚙合頭部31之相反 側延伸，且經由股部35而分歧。藉由設置2條腳部％，在 圖1所示之滑件7向鏈齒3之排方向滑動時，與先前之翅片 相比，可減輕滑件7之滑動操作。 圖3係從圖2之A-A方向所觀察到之剖面圖。鏈齒3、“、 3b具有以鏈布10為中心相對鏈布1〇之表裏面呈大致對稱之 形狀。圖2所示之嚙合頭部31、頸部32 '基部33、肩部％ 及腳部36，如圖3所示，包含：配置於鏈布1〇之表面側之 上半部3U、32a、33a、34a、36a;與配置於鏈布1〇之裏 面側之下半部3lb、32b、33b、34b' 36b。嚙合頭部31之 上半部3U及下半部31b之間形成有間隙％，且於該間隙μ 内收納鏈布1 〇之端面11 a。 肩部34之上半部34a及下半部34b之表裏方向（高度方向） 之厚度係薄於嚙合頭部3 1、頸部32及基部33之厚度。如曰 2所示，將形成於頸部32之兩側之肩部34之外側端緣間連 結之全肩寬，係以大於基部33之寬（鏈布1〇之長度方向之 寬）之方式形成。另，肩部34之全肩寬之長度不限定於圖2 所示之例，可根據拉鏈1之特性進行適宜變更。夢由以 147979.doc 201121453 定寬度以上形成肩部34之全肩寬，可進一步補強鍵布狀 端面lla彼此的壓接，因此可進一步提高防水性。肩部Μ 上，為提高防水性及氣密性’亦可形成連結鄰接之肩部W 彼此之連結部（未圖示）、或貫通穴（未圖示）。 如圖1所示，下止擋4係藉由射出成形而形成於鏈齒3、 3a、3b之排之最下端部附近之熱可塑性樹脂製之零件，且 具有大致方形之外形。下止擋4之外形形狀並無特別限 定。其中，如圖2所示，較好的是於與最下端之鏈齒“之 嚙合頭部31對向的位置具備凹部42。凹部42收納最下端之 鏈齒3a之嚙合頭部31之一部分（圖2中為—半左右），且使鏈 布10、10之端面11a彼此密接或壓接之區域14(參照圖2)露 出。此處，所謂「區域14」是指位於最下端之鏈齒3&之嚙 合頭部3 1之側端部與下止擋4之間的密接或壓接部分。藉 由以使區域14向外部露出之方式而於下止擋4設置凹部 42，可抑制在將下止擋4射出成形時，使已熔融之樹脂藉 由射出成形時的壓力從模具溢出，而流入在嚙合頭部31之 上半部；31&及下半部3113之間以通道狀連續形成於鏈布1〇之 長度方向的間隙38(參照圖3)内。其結果，可抑制樹脂附著 於鏈齒3 ' 3a、3b或鏈布1〇之對向緣部u附近，因此，可 抑制因樹脂附著而導致產生毛邊等。凹部42除了變更用以 將下止擋4成形之模具的形狀以外，無需在先前之步驟上 施與較大變更，因此亦容易製造。 如圖2所示，下止擋4係以覆蓋最下端之鏈齒3a之基部33 及腳部36之上面之一部分的方式而被連結。凹部42之形狀 147979.doc 201121453 可符合嚙合頭部31之形狀而成形，以不使嚙合頭部31與下 止擋4接觸。藉由設置如此之凹部42，可儘可能縮短下止 擋4與最下端之鏈齒3b之距離，因此可提高下止擋4附近之 防水性及氣密性。 更好的是，於凹部42内收納最下端之鏈齒3a之肩部 34(下方側）。如圖4所示，肩部34(上半部34a、下半部34b) 由於係熔融固著於鏈布10上，且補強鏈布1〇，因此可防止 鏈布10之歪斜.等，從而可進一步提高鏈布1〇、1〇彼此之密 接性。 如圖2所示，凹部42係藉由使下止擋4之上方側端部“之 寬度方向中央向下方凹下而形《。下止撐4之±方側端部 48包含.第1上方側端部45，其定義凹部42之槽；第2上方 側编。卩46及第3上方側端部47，其係位於凹部42之槽之底 部的上方，且夾著第丨上方側端部45而定義其兩端部分。 且’嚙合頭部31之一部分(至少下方側端部)及肩部34係配 置成位於第2上方側端部46及第3上方側端部47之下方側， 藉此收納於凹部42内。凹部42中，喷合頭部31及肩部“未 被下止擋4覆蓋’而是露出之狀態。 下止擋4之第2及第3上方側端部46、们係藉由位於區域 14之上方而將區域14收納於凹部心内。藉此，可適宜地進 行區域14内之密接或壓接。 如圖4所示，較好的是，下止撞4之表裏方向之厚度— 於鏈齒3a之表裏方向之厚度t”藉由將下止擋*之厚度“厚 於與最下端之鏈齒3a之厚度t2地形成，可使射出成形時之 147979.doc 201121453 ::步驟變得容易’且亦可提高下止擔4之強度。又藉 使厗度tl、t2變化，如圖7所示，可用下止擋4之第2上方 側端部46與第3上方側端部47支撐滑❺，因此可為停止滑 件7而形成更合適之形狀。 如圖1所示，較好的（，設於最下端之鏈齒3&與鍵布 10 10之端部之間的空間部15上，又具備跨鏈布10、雙 方而積層之薄板構件5。薄板構件5,例如使用藉由包含： 然或合成橡料料或各種合成樹脂之彈性體材料或樹脂薄 膜覆蓋織製或編製之基布或非織布的表裏面，或者，僅藉 ^ 3天然或合成橡膠材料或各種合成樹脂之彈性體材料 或樹脂薄膜賦與防水性之材料。薄板構件5，㈣ '^面圖之圖5所示，係以覆蓋拉鏈薄板1〇、1〇之對向緣部 11、11上的方式配置。薄板構件5，較好的是利用高頻加 或超a波加工熔接而黏附（貼附）於拉鏈薄板丨〇上。薄板 構件5，若考慮接著性，則較好的是與鏈布ι〇所使用之材 料相同之種類的熱可塑性彈性體。為進一步提高防水性， 亦可於鏈布10上配置複數層薄板構件5。或者，以支持由 凹邛42露出之區域14，亦可為具有向凹部42突出之突出部 分（未圖示）之形狀。 如圖6所示，下止擋4係覆蓋形成於鏈布1〇及薄板構件$ 之貝通孔8而被射出成形，通過貫通孔8將表面側與裏面側 連結而安裝下止擋4。藉由使至少〗個貫通孔8(具備最下端 之鏈齒3a之鏈布1〇之相反側之鏈布1〇上所形成的貫通孔8) 位於凹部42之端部之上方，可以於凹部42内收納有嚙合頭 147979.doc •10- 201121453 部31及肩部34之狀態’牢固地固定鍵布1〇與下止授4。 如以上說明，根據實施形態之拉鏈1，藉由設置連結於 最下端之鏈齒3a且於與最下端之鏈齒3a之嚙合頭部31對向 之位置具備凹部42的下止擋4 ’可提高鏈布彼此之密接力 較弱的下止擋4周邊的防水性及氣密性。又，凹部42係以 使1對鏈布10、10之端面Ua彼此被壓接之區域14露出的方 式而配置，因此容易製造，且在射出成形時樹脂不會流入 不必要的部位，從而亦可抑制製品之特性降低。又，藉由 使區域14位於凹部42内，即使在下止擋4附近於寬度方向 施加有拖拉力（橫拉力），該力仍不會直接施加於區域Μ , 因此可維持端面lla彼此之壓接，從而維持防水性、氣密 性。 (第1變形例） 實施形態之第1變形例之拉鏈，如圖7所示，最下端之鏈 齒3a與下止擋4連結，且，下止擋4在最下端之鏈齒化之相 反側之鏈帶2上，亦連結有與最下端之鏈齒嚙合之鏈齒 3b。該連結之部分之厚度與鏈齒3b；fej^藉此連結—對鍵 帶2、2各者之最下端之鏈齒3a、扑與下止擋4，因此可進 一步保持壓接之區域之密接狀態。 (第2變形例） 如圖8所示’下止擋4之 實施形態之第2變形例之拉鏈 形狀與圖2所示之構成不同。即，圖8所示之拉鍵，下止擒 4具備本體部41、炎著凹部42而相互對向之第以出和及 第2突出部44。第1突出部43係以覆蓋最下端之鏈齒3a之表 147979.doc 201121453 面之一部分的方式連結，且第2突φ A卩… 乐大出部44係以覆蓋與最下 端之鏈齒3a對向而嚙合之另一鐽冉3 鰱回讣之表面的一部分的方 式’向鏈布10之長度方向大於第1突 不1大：出部43地形成。其他 與圖2所示之構成實質上相同。 如上所述記載了本發明之實施形態，但形 部分之論述及圖式並不應理解為限定該發明者1如，圖 2〜圖8中例示有表面側之下止擋4之構成但裏面側亦可採 用相同之構成。如此，本發明當然亦包含未在此明示之各 種態樣，且在實施階段可在不脫離其主旨之範圍内實施變 形而具體化。 【圖式簡單說明】 圖1係顯示本發明之實施形態之拉鏈之整體構成例的概 略圖。 圖2係顯示下止擋周邊之構成例的部分放大圖。 圖3係從圖2之A-A方向所觀察到之剖面圖。 圖4係從圖2之B_B方向所觀察到之剖面圖。 圖5係從圖2之C-C方向所觀察到之剖面圖。 圖6係例示實施形態之鏈布之貫通穴的概略圖。 圖7係顯示實施形態之第1變形例之拉鍵之下止擋周邊的 構成例的部分放大圖。 圖8係顯示實施形態之第2變形例之拉鍵之下止攮周邊的 構成例的部分放大圖。 【主要元件符號說明】 1 拉鏈 147979.doc 201121453 2 鏈帶 3、3a、3b 鏈齒 4 下止擋 5 薄板構件 6 上止擋 7 滑件 8 貫通孔 10 鏈布 11 對向緣部 11a 端面 12 帶狀構件 13 防水層 31 嚙合頭部 32 頸部 33 基部 34 肩部 41 本體部 42 凹部 43 第1突出部 44 第2突出部 147979.doc •13-201121453 VI. Description of the Invention: TECHNICAL FIELD The present invention relates to a zipper, and more particularly to a zipper having water repellency. [Prior Art] A water-repellent zipper is known in the prior art in which a plurality of sprocket teeth are injection-formed as a chain belt at opposite edges of a pair of waterproof chain cloths, and the lower end and the upper end of the sprocket are respectively lowered. The upper stop and the upper stop are injection molded and installed, and the sliding member is slidably inserted between the upper stop and the lower stop. Such a zipper can be closely attached to the end faces of the chain fabric by using the sliders to engage the fastener elements, thereby obtaining water repellency and airtightness. However, since the region between the lowermost sprocket and the lower stopper does not have the element teeth and does not generate the engaging force, the adhesion of the chain cloths to each other is weaker than the area where the sprocket teeth mesh with each other. Therefore, when water pressure or air pressure is applied thereto, there is a case where water or air leaks from the region between the lowermost sprocket and the lower stopper. In order to suppress water leakage or air leakage, for example, in Japanese Patent Publication No. 2-7i58i9, a thin plate member having a rectangular protrusion is supported on a chain cloth so that the end edge of the protrusion is in contact with the lowermost chain window. In this way, the area between the lowermost sprocket and the lower stop where the adhesion of the key cloth is weak is enhanced, and the waterproofness and airtightness are improved. As another means, there is also known a technique for improving the waterproofness and airtightness of the periphery of the τ stopper by covering the sprocket of the lower end portion with the lower end. [Problems to be Solved by the Invention] However, the zipper described in Patent Document 1 has a thin plate member peeled off due to long-term use. The situation. On the other hand, in the method of covering the lower end portion of the fastener element and forming the lower stopper, the smelted resin may be burred from the mold due to the pressure at the time of molding, which may cause manufacturing difficulties. Furthermore, the overflowing resin hinders the meshing of the fastener elements, so that the characteristics of the product are also reduced. In view of the above problems, the present invention has been made in an effort to provide a slide fastener which is easy to manufacture and which can improve the waterproofness and airtightness in the vicinity of the lower stop. Means for Solving the Problems In order to solve the above problems, the present invention provides a zipper having a waterproof structure on one side, i comprising: a chain belt having a pair of opposite edges along a pair of waterproof chains a plurality of sprocket teeth; a sliding member that couples and disengages the sprocket; and a lower stop that is disposed across the chain and the chain cloth. (4) The lower end of the tooth row ϋ 'each sprocket includes: a merging head a neck extending from the head, a base extending from the neck, and a shoulder-like extension extending from the sides of the neck; the lower stop is coupled to the lowermost chain, and a recess is formed at a position opposite to the head of the lowermost sprocket, and the recess is a portion of the head of the spur of the lowermost end, and the area where the end faces of the gusset are pressed against each other is exposed. . The zipper of this month's zipper 'in the embodiment' is recessed to accommodate the lowermost end of the 147979.doc 201121453 sprocket shoulder. In the zipper of the present invention, in one embodiment, the lower stop is coupled so as to cover a portion of the base of the lowermost fastener element. In the zipper of the present invention, in an embodiment, the thickness of the lower stop is thicker than the thickness of the fastener element. In the zipper of the present invention, in a space portion provided between the sprocket and the end portion of the chain fabric, λ includes a thin member laminated on both sides of the chain fabric. In the zipper of the present invention, in an embodiment, the upper end portion of the lower stopper is located above a region where the end faces of the pair of chain fabrics are pressed against each other. Advantageous Effects of Invention According to the present invention, it is possible to provide a slide fastener which is easy to manufacture, can improve product characteristics, and can improve water repellency and airtightness in the vicinity of a lower stopper. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the following drawings, the same or similar parts are given the same or similar symbols. The embodiment shown in the following is a device or a method for embodying the technical idea of the present invention. The technical idea of the present invention is not to specify the structure, arrangement, and the like of the component. As shown in Fig. 1, the water-repellent slide fastener 1 according to the present invention includes a chain f 2 having a plurality of sighs slid along the opposite edge portions 11 and 11 of the pair of chain fabrics 1〇 and 1〇. The sprocket teeth 3, 3a, 3b; and the slider 7, which engage and disengage the sprocket 3, 3a'3b. The lower end of the row of the sprocket teeth 3, 3a, 3b is provided with a stop 4 disposed under the chain cloth. The upper ends of the rows of the sprocket teeth 3, 3a, and 3b are respectively 147,979.doc 201121453 is provided with the upper end loads 6, 6. In the following description, the length direction of the chain cloth 1〇 and 1〇 is defined as "up and down direction". In particular, the slider 7 will be the meshing sprocket 3, 3 & and the direction of the relative movement of the sprocket 3, 3a, 3b as "upper", which will be the sprocket 3, 3a, 3b The direction in which the rows are separated and moved is referred to as "below". Further, the direction of the direction of the chain fabrics 10, 10 is defined as "height direction". Further, the direction in which the surface of the zipper 1 is horizontal and orthogonal to the longitudinal direction of the chain cloth 1 and 忉 is referred to as the "width direction". The chain fabric 10 has a waterproof structure. As the chain fabric, as shown in Fig. 3, it is suitably used around the belt member 12 to be woven or braided, and covered with a waterproof layer 13 composed of an elastomer material containing a natural bite synthetic rubber material or various synthetic resins. Waterproof chain cloth. In the present embodiment, the "waterproof structure" means that the end faces 11a of the left and right chain cloths 1 and 1 are connected to each other in a state in which the fastener elements 3, 3a, and 3b are meshed with each other to make the left and right chain fabrics. The structure of the state without gaps between turns. Since the chain cloth 10 is covered with the waterproof layer 13 around the belt member ' 2, the end faces of the waterproof layer 13 are brought into close contact with each other, thereby exhibiting water repellency, watertightness, and airtightness. In the present embodiment, It is described as "waterproof", but it is not limited to water. If it contains liquid, if it contains oil, etc., as shown in Fig. 6, as shown in Fig. 6, along the opposite edge portion 11 of the chain fabric, there is a chain. A plurality of through holes 8 of a sufficient size to which the molten resin used for the manufacture of the teeth 3, 3a, and 3b pass are formed corresponding to the positions of the women's teeth of the fastener elements 3, 3a, 3b and the lower stopper 4. The fastener elements 3, 3a, and 3b are integrally fused to the front surface of the fastener fabric 10 via the through holes 8. I47979.doc -6 - 201121453 The sprocket 3, 3a, 3b is made of a synthetic resin such as a thermoplastic resin. As shown in Fig. 2, the sprocket teeth 3, 3a, and 3b are respectively provided with a spray head 31 which has an oblong shape in the longitudinal direction of the chain fabrics 10 and 10 as viewed in plan, and (4) a head portion 3 32; a base portion 33, which is (4) buckled and has a substantially hexagonal shape when viewed in plan; a pair of left and right shoulder portions 34 that are oriented from the sides of the neck portion 32 toward the length of the chain cloth 1 (), 1G. The leg portions 36 extend from the end of the base portion 33 to the opposite side of the engaging head portion 31 and are branched via the thigh portion 35. By providing the two leg portions %, when the slider 7 shown in Fig. 1 slides in the row direction of the fastener elements 3, the sliding operation of the slider 7 can be reduced as compared with the previous fins. Figure 3 is a cross-sectional view as seen from the direction A-A of Figure 2. The sprocket 3, ", 3b has a substantially symmetrical shape with respect to the inside of the sash of the chain fabric 10 centering on the chain fabric 10. The engaging head 31, the neck portion 32, the base portion 33, the shoulder portion % and the foot shown in Fig. 2 As shown in FIG. 3, the portion 36 includes: upper surface portions 3U, 32a, 33a, 34a, and 36a disposed on the surface side of the chain fabric 1; and a lower half portion 3lb disposed on the inner side of the fastener fabric 1 32b, 33b, 34b' 36b. A gap % is formed between the upper half 3U and the lower half 31b of the engaging head 31, and the end face 11a of the chain fabric 1 is accommodated in the gap μ. Above the shoulder 34 The thickness of the front portion (height direction) of the half portion 34a and the lower portion 34b is thinner than the thickness of the engaging head portion 31, the neck portion 32, and the base portion 33. As shown in FIG. 2, it will be formed on both sides of the neck portion 32. The full shoulder width of the outer side edge of the shoulder portion 34 is formed to be larger than the width of the base portion 33 (the width of the longitudinal direction of the chain cloth 1). Further, the length of the shoulder width of the shoulder portion 34 is not limited. In the example shown in Fig. 2, it can be changed according to the characteristics of the zipper 1. The dream can be further strengthened by forming the shoulder width of the shoulder 34 by the width of 147979.doc 201121453. Since the cloth-like end faces 11a are pressed against each other, the water repellency can be further improved. The shoulder portion can be formed to connect the adjacent shoulder portions W (not shown) to improve the waterproofness and airtightness, or a through hole (not shown). As shown in Fig. 1, the lower stopper 4 is formed of a thermoplastic resin member formed in the vicinity of the lowermost end portion of the row of the fastener elements 3, 3a, and 3b by injection molding, and has The outer shape of the lower stopper 4 is not particularly limited. As shown in Fig. 2, it is preferable that the recess 42 is provided at a position opposed to the meshing head 31 of the lowermost sprocket. The recessed portion 42 accommodates a portion of the meshing head portion 31 of the lowermost sprocket 3a (half in FIG. 2), and exposes the region 14 (refer to FIG. 2) in which the end faces 11a of the chain fabrics 10, 10 are in close contact or pressure contact with each other (see FIG. 2). . Here, the "region 14" means a close contact or crimping portion between the side end portion of the engaging head portion 3 1 and the lower stopper 4 located at the lowermost end of the fastener element 3 & By providing the recessed portion 42 in the lower stopper 4 so that the region 14 is exposed to the outside, it is possible to prevent the melted resin from overflowing from the mold by the pressure at the time of injection molding when the lower stopper 4 is injection molded. The upper half of the meshing head portion 31 and the lower portion 3113 are continuously formed in a channel shape in a gap 38 (see FIG. 3) in the longitudinal direction of the chain fabric 1 . As a result, it is possible to prevent the resin from adhering to the vicinity of the opposite edge portion u of the fastener elements 3' 3a, 3b or the chain fabric 1), so that generation of burrs or the like due to adhesion of the resin can be suppressed. The recess 42 is also easy to manufacture, except that the shape of the mold for molding the lower stopper 4 is changed, and it is not necessary to make a large change in the previous step. As shown in FIG. 2, the lower stopper 4 is coupled so as to cover one of the base portion 33 of the lowermost sprocket 3a and the upper portion of the leg portion 36. The shape of the recess 42 147979.doc 201121453 can be shaped in accordance with the shape of the engaging head 31 so as not to bring the engaging head 31 into contact with the lower stopper 4. By providing such a recessed portion 42, the distance between the lower stopper 4 and the lowermost sprocket 3b can be shortened as much as possible, so that the waterproofness and airtightness in the vicinity of the lower stopper 4 can be improved. More preferably, the shoulder portion 34 (lower side) of the lowermost sprocket 3a is housed in the recess 42. As shown in FIG. 4, the shoulder portion 34 (the upper half portion 34a and the lower half portion 34b) is fixed to the chain cloth 10 by the melt, and the reinforcing chain cloth 1 is reinforced, thereby preventing the chain cloth 10 from being skewed, etc., thereby The adhesion between the strands 1 and 1 can be further improved. As shown in Fig. 2, the concave portion 42 is formed by recessing the center of the upper end portion of the lower stopper 4 in the width direction downward. The side end portion 48 of the lower stopper 4 includes the first upper portion. The side end portion 45 defines a groove of the recessed portion 42; the second upper side of the groove 46 and the third upper side end portion 47 are located above the bottom of the groove of the recessed portion 42 and sandwich the upper end portion of the second side The both ends of the meshing head 31 (at least the lower end) and the shoulder 34 are disposed on the lower side of the second upper end 46 and the third upper end 47, respectively. Thereby, it is accommodated in the recessed part 42. In the recessed part 42, the injection head 31 and the shoulder part are not covered by the lower stop 4, and it is exposed. The second and third upper end portions 46 of the lower stop 4 are placed in the center of the recess by being positioned above the region 14. Thereby, the adhesion or crimping in the region 14 can be suitably performed. As shown in Fig. 4, it is preferable that the thickness of the direction of the lower end collision 4 - the thickness t in the direction of the front and the rear of the fastener element 3a" is thicker than the thickness of the lowermost end by the thickness of the lower stop * The thickness of 3a is formed at a thickness t2, so that the 147979.doc 201121453::step can be easily made at the time of injection molding, and the strength of the lower end load 4 can also be improved. Further, by changing the twists t1 and t2, as shown in FIG. 7, the second upper end portion 46 and the third upper end portion 47 of the lower stopper 4 can support the slide, so that the slider 7 can be stopped. More suitable shape. As shown in Fig. 1, it is preferable that the space portion 15 provided between the lowermost sprocket 3& and the end portion of the key fabric 10 10 is provided with a lining cloth 10 and a thin plate member 5 laminated on both sides. The thin plate member 5 is, for example, covered with a base fabric or a non-woven fabric which is covered or woven by an elastomer material or a resin film containing: or a synthetic rubber material or various synthetic resins, or only by ^3 A natural or synthetic rubber material or an elastomer material or a resin film of various synthetic resins is imparted with a water-repellent material. The thin plate member 5, (4) is shown in Fig. 5 of the '^ face diagram, and is a pair of zipper sheets 1 〇, 1 覆盖Arranged to the edge portions 11, 11. The thin plate member 5 is preferably adhered (attached) to the zipper sheet by high frequency or super a wave processing. The thin plate member 5, if the adhesion is considered Preferably, the thermoplastic elastomer is of the same type as the material used for the chain cloth. To further improve the water repellency, a plurality of thin plate members 5 may be disposed on the chain fabric 10. Alternatively, the support may be concave. The exposed area 14 of the crucible 42 may also have a convex portion 42 The shape of the protruding portion (not shown). As shown in Fig. 6, the lower stopper 4 is formed by covering the bead hole 8 formed in the chain fabric 1 and the thin plate member $, and is formed by the through hole 8 The lower stopper 4 is attached to the inner side. The at least one through hole 8 (the through hole 8 formed on the opposite side of the chain fabric 1 on the opposite side of the fastener element 3a) is located. Above the end of the recessed portion 42, the engaging portion 147979.doc • 10 - 201121453 portion 31 and the shoulder portion 34 can be accommodated in the recessed portion 42 to securely fix the key cloth 1 〇 and the lower stop button 4. As explained above, According to the slide fastener 1 of the embodiment, the lower stopper 4' having the concave portion 42 at a position opposite to the meshing head portion 3a of the lowermost end sprocket 3a is provided by the zipper 1 of the embodiment, and the chain cloths can be improved from each other. The waterproof portion and the airtightness of the periphery of the lower stopper 4 having a weak adhesion are disposed. The recess 42 is disposed such that the region 14 in which the end faces Ua of the pair of chain fabrics 10 and 10 are pressed together is exposed. Easy to manufacture, and the resin does not flow into unnecessary parts during injection molding, thereby suppressing the product Further, by placing the region 14 in the recess 42, even if a pulling force (cross pulling force) is applied in the width direction near the lower stopper 4, the force is not directly applied to the region Μ, so that the end faces 11a can be maintained each other. In the zipper according to the first modification of the embodiment, as shown in FIG. 7, the lowermost sprocket 3a is connected to the lower stopper 4, and the pressure is maintained. The lower stop 4 is also coupled to the fastener element 3b that meshes with the lowermost sprocket on the chain 2 opposite to the lowermost end of the sprocket. The thickness of the portion of the joint and the sprocket 3b; The connection—the sprocket 3a at the lowermost end of each of the key belts 2 and 2, and the lower stop 4 are provided, so that the close contact state of the pressure-bonded region can be further maintained. (Second Modification) The shape of the zipper according to the second modification of the embodiment of the lower stop 4 shown in Fig. 8 is different from the configuration shown in Fig. 2 . That is, in the pull key shown in Fig. 8, the lower stop 擒 4 includes the main body portion 41 and the swelled concave portion 42 and is opposed to each other and the second projecting portion 44. The first protruding portion 43 is coupled so as to cover one of the surfaces of the lowermost sprocket 3a of the table 147979.doc 201121453, and the second protrusion φ A 卩 ... the spur portion 44 is covered with the lowermost sprocket 3a The manner in which the other surface of the other side of the mesh is engaged is "the direction in which the longitudinal direction of the chain fabric 10 is larger than the first projection: the outlet portion 43 is formed. Others are substantially the same as the configuration shown in Fig. 2. The embodiments of the present invention have been described above, but the description and drawings of the shaped portions are not to be construed as limiting the inventors. For example, the configuration of the surface side lower stop 4 is illustrated in FIGS. 2 to 8 but inside. The same configuration can also be used for the side. As such, the present invention is of course not limited to the details thereof, and may be embodied in various embodiments without departing from the spirit thereof. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing an overall configuration example of a slide fastener according to an embodiment of the present invention. Fig. 2 is a partially enlarged view showing a configuration example of the periphery of the lower stopper. Figure 3 is a cross-sectional view as seen from the direction A-A of Figure 2. Fig. 4 is a cross-sectional view as seen from the direction of B_B of Fig. 2. Figure 5 is a cross-sectional view as seen from the C-C direction of Figure 2. Fig. 6 is a schematic view showing a through hole of a chain cloth according to the embodiment. Fig. 7 is a partially enlarged view showing a configuration example of the periphery of the stopper under the pull key in the first modification of the embodiment. Fig. 8 is a partially enlarged view showing a configuration example of the vicinity of the stopper under the pull key in the second modification of the embodiment. [Main component symbol description] 1 zipper 147979.doc 201121453 2 Chain belt 3, 3a, 3b sprocket 4 lower stop 5 thin plate member 6 upper stop 7 slider 8 through hole 10 chain cloth 11 opposite edge portion 11a end face 12 Belt member 13 Water-repellent layer 31 Engagement head 32 Neck 33 Base portion 34 Shoulder portion 41 Main body portion 42 Concave portion 43 First protrusion portion 44 Second protrusion portion 147979.doc • 13-