201029594 六、發明說明： 【發明所屬之技術領域】 本發明係關於在沿著一對鏈布 7硬布之端緣安裝之扣結元件 (以下有時僅簡稱為元件）之嚙人眸 _ ;嚅口時，由布帶表面看不見嚙 合π件之隱藏式拉鍵用之扣結元件、及將該元件列設於曲 折成u字狀之鏈布之元件安裝緣部之隱藏式拉鍵。 【先前技術】201029594 VI. Description of the Invention: [Technical Field] The present invention relates to a fastening element (hereinafter sometimes simply referred to as an element) mounted on an edge of a hard cloth along a pair of chain cloths 7; When the mouth is opened, the fastening member for the hidden pull button that engages the π member is not visible from the surface of the tape, and the hidden pull button for the component mounting edge portion of the chain member that is bent into a u-shaped chain is not listed. [Prior Art]
以往’使用於此種隱藏式拉鏈之扣結㈣係藉由合成樹 脂之射出成型或鋅合金等之壓鑄等沿著在鏈布之—端緣設 有芯繩部之元件安裝緣部被裝定。 使用於此隱藏式拉鍵之元件具有縱剖面呈大致U字形 狀’形成於其-端之it件之唾合部向鏈布之内側被裝定。 在此狀態下，將安裝元件之鏈布之元件安裝緣部翻折糾 字狀而以熱裝置等固定形狀後，將滑件插通於元件列，藉 以獲得隱藏式拉鏈。 但，在此種隱藏式拉鏈中，一般，元件在嚙合狀態時， 由鏈布之兩側向布帶寬度方向施加拉伸應力時，在左右之 鏈布間會產生間隙而可由布帶表面側看到嚙合狀態之元 件，故有不能確保隱蔽性之問題。 因此，為消除此問題，例如在日本實公昭524〇483號公 報（專利文獻1)或日本新型專利申請第2598345號公報（專利 文獻2)所揭示之隱藏式拉鏈用之扣結元件中，在縱剖面口 字狀之元件之開放端之一端設有嚙合部。此嚙合部具有布 帶固著側之板狀部、一體形成於與該板狀部之布帶固著側 140702.doc 201029594 相反面之頸部、及由該頸部向元件之開放端側前方延設之 喊合頭部’在前述板狀部之排除頸部之卡合面與前述頸部 及嚙合頭部之周面之間形成可與相對方之嚙合部裝卸之嚙 合空間。此等專利文獻1及2所揭示之裝定元件之隱藏式拉 鏈係在滑動滑件而嚙合左右之元件時，可藉由前述卡合面 限制兀件向布帶表面之移動，故可獲得無偏位之穩定之嚙 合狀態。又，即使張力作用於布帶寬度方向，前述卡合面 也可防止兀件布帶表面側之旋動，並可防止在左右之鏈布 間產生間隙而使元件露出拉鏈表面。 如此，對隱藏式拉鏈特別要求之功能不僅在所需之張力 作用於布帶寬度方向時，確保元件之嚙合難以鬆脫之嚙合 強度，而且在於具有不會由左右之鏈布間看到元件之隱蔽 性。然而，近年來，適用隱藏式拉鏈之製品極為多樣化。 即’不限於歷來之各種衣服類或皮包類，其用途已擴及例 如汽車或火車、航空器等之座椅用椅套等各種製品。 具體而言，例如將隱藏式拉鏈適用於汽車之椅套之情形 等，由於通常椅套形成比緩衝體之外形尺寸更小對元件 唾合時或處於唾合狀態之隱藏式拉冑，在左右拉鏈繫條會 有強的拉伸應力施加至布帶長度方向及寬方向。但，以往 之隱藏式拉鏈受到如上述之強的拉伸應力時，左右鏈布間 容易產生間隙，或發生元件之嚙合鬆脫之缺失。 又，尤其在上述專利文獻丨及2所記載之隱藏式拉鏈中， 也難以承受扭轉力或推麼力等，例如縫合在衣物等之隱藏 式拉鏈受到扭轉力或推壓力之情形，有元件之嚙合部容易 140702.doc 201029594 發生變形或破損’不能承受長期使用之問題。 尤其，則述專利文獻1之元件係構成在左右元件嚙合 時，嚙合部之各部侧面彼此會密接，故在曲折扣鏈之際， 扣鏈帶有僵直性而欠缺柔軟性，故也有不能圓滑施行曲折 #作之缺失。另—方面’前述專利文獻2之元件在左右元 件喷合時，i以相冑方之元件之前後卡合面支持續合頭部 之布帶長度方向之兩端角冑，左纟鄰接之相對方之元件之 Φ 卡合面彼此並未密接，故雖容易施行拉鏈之長側方向之曲 折操作，但因嚙合頭部係由元件之基部（主體）經由粗度狹 小之頸部伸出，故有嚙合頭部或頸部容易發生變形或破損 之缺失。 為消除此問題，依照日本特開2007-1 5 1839號公報（專利 文獻3)，有人提案一種隱蔽性及嚙合強度優異，布帶寬度 方向受到拉伸應力，左右鏈布間也不會產生間隙，且受到 扭轉力或推壓力等，也不會發生變形或破損之隱藏式拉鏈 0 用之扣結元件。 專利文獻1:曰本實公昭52_10483號公報 專利文獻2:日本新型專利申請第2598345號 專利文獻3:曰本特開2〇〇7-151839號公報 【發明内容】 發明所欲解決之問題 上述專利文獻3所提案之隱藏式拉鏈用之扣結元件係包 含：C字狀基部，其係抱持芯繩部；平板狀之第1及第2布 ▼夾持部’其係由該C字狀基部之各前端大致平行地向同 140702.doc 201029594 一方向延伸，在其久 、 士向面具有夾持鏈布之側緣部之笛, =布帶夾持面’·及…係一趙地形成 狀基部之前端及與前述第2布帶夾持部之前述第2布;^ 面，合部係具有與前述第2布帶夹持部 月卜义^化之頸部、由該頸部越過前述第2布帶夾 持部之前端面而突中夕成人a 犬出之嚙合碩部、及由前述C字狀基部 f端面所構叙肩部。另外，位於前述第2布帶夾持部之 刖述#面而排除則述頸部之平面係構成卡合面。其特徵的 ❹ 構成在於將刖述第i布帶夹持部之前端面形成比前述第2布 帶夾持4之前端面更寬幅，更好為將前述第2布帶夹持部 之月’』述卡口面形成對前述喷合部之4合頭部之上面，由該 卡合面之基端向前端形成向上傾斜之傾斜面。 由於包含此特徵的構成，在左右元件之响合部彼此嗜合 之際 方元件之嚙合頭部一面被相對方之卡合面導引而 向下方被下推 面滑動至喷合位置，同時在元件响合 ❹ 時’可使則述第1布帶夾持部之前端面由左右推壓鏈布之 面積比以往之情形更為增大，可在左右元件間由兩側穩定 地推壓鏈布’故隱藏式拉鏈即使受到拉伸應力，也可有效 防止左右鍵布間產生間隙，可確保隱藏式拉鏈之優異的穩 蔽性。 然而’此種隱藏式拉鏈呈現對如上述之多樣的領域之適 用的擴大’其結果，如上述專利文獻3所示，在裝定於製 品之隱藏式拉鏈受到扭轉力或推壓力之情形，原本可提高 元件彼此之响合強度與元件隱蔽性，嚙合頭部或頸部難以 140702.doc 201029594 發生變形或破損，但卻有可能因適用領域，而發生僅依賴 以往之規定概念無法應付該領域特有之要求之事例。 例如，近年來’許多汽車用座椅已逐漸趨向裝定氣囊裝 置。如此在裝定氣囊裝置之座椅用之椅套中，並非如以往 般僅以座椅椅套包覆座椅就算完事，通常在外觀上雖維持 與以往同樣之椅套形狀，但因有必要在萬一發生事態促使 •氣囊裝置作動時瞬間且圓滑地使氣囊向座椅外之特定方向 ❹ 膨脹展開故座椅用椅套之展開部也必須在受到氣囊之膨 脹壓之瞬間迅速且確實地展開。 因此，以往在包覆裝定氣囊裝置之座椅椅套之展開部使 用脆弱的線或塑膠零件，在受到氣囊之膨脹壓之瞬間可迅 速且確實地展開。但使用此種脆弱的線或塑膠零件之情 形，谷易知及汽車用座椅之美觀，尤其使用脆弱的線時， 在座椅椅套之展開部之表皮背面有必要縫上低伸縮性布 料，不但增加座椅製造上之複雜性，也容易導致作業上及 • 材料上之成本的增加。又，使用脆弱的塑膠零件之情形， 椅套之展開部展開時，塑膠零件會斷裂而容易使其斷裂碎 片向周邊飛濺。 ，據此情況時，尤其重要的是w裝定有氣囊裝置 之汽車等之座椅之椅套之展開部在冑常時要確保外觀上之 美觀，且在氣囊裝置作動時，在氣囊膨脹展開之同時，椅 套之展開部也要迅速地展開，另外，並被要求能以合理的 成本製作該椅套之前述展開部。 為應付此等要求’本發明之目的在於提供—種可活用上 140702.doc 201029594 述隱藏式拉鏈之優點，並彌補其缺點而保持作為裝定有氣 囊裝置之汽車用座椅之椅套之良好美觀，在氣囊裝置作: 時可使椅套之展開部迅速且圓滑地展開之隱藏式拉鏈。 解決問題之技術手段In the past, the buckle (4) used in the concealed zipper was set by the injection molding of a synthetic resin or the die casting of a zinc alloy or the like along the component mounting edge portion in which the core cord portion is provided at the end edge of the chain fabric. . The element using the concealed pull key has a salvage portion in which the longitudinal member has a substantially U-shaped shape and is formed at the end thereof, and is attached to the inner side of the chain cloth. In this state, the component mounting edge of the chain of the mounting component is folded and corrected, and the shape is fixed by a heat device or the like, and then the slider is inserted into the component row to obtain a hidden zipper. However, in such a hidden zipper, generally, when the element is in the meshing state, when tensile stress is applied from the both sides of the chain cloth to the width direction of the tape, a gap is formed between the left and right chain cloths, and the surface side of the tape can be applied. When the component in the meshing state is seen, there is a problem that the concealability cannot be ensured. Therefore, in order to eliminate the problem, for example, in the fastening element for a concealed zipper disclosed in Japanese Patent Publication No. 524-483 (Patent Document 1) or Japanese Patent Application No. 2598345 (Patent Document 2), One end of the open end of the element having a longitudinal section is provided with an engaging portion. The engaging portion has a plate-like portion on the side of the tape fixing side, a neck portion integrally formed on the opposite side of the tape fixing side 140702.doc 201029594 of the plate portion, and a front side of the open end side of the member from the neck portion The extending head portion 'between the engaging surface of the neck portion of the plate portion and the peripheral surface of the neck portion and the engaging head portion forms a space for engaging and disengaging the engaging portion of the opposite side. The concealed zipper of the fixing member disclosed in Patent Documents 1 and 2 is capable of restricting the movement of the member to the surface of the tape by the engaging surface when the slider is engaged with the left and right members, so that no A stable meshing state of the offset. Further, even if the tension acts on the width direction of the tape, the engaging surface can prevent the surface side of the element tape from being rotated, and a gap can be prevented between the left and right chain pieces to expose the element to the surface of the zipper. Thus, the function particularly required for the hidden zipper not only ensures that the engagement of the components is difficult to loosen when the required tension acts on the width direction of the tape, but also has the function of not seeing the components between the left and right chains. Concealed. However, in recent years, products for concealed zippers have been extremely diverse. Namely, it is not limited to various clothes or purses, and its use has been expanded to various types of products such as seat covers for automobiles, trains, and aircraft. Specifically, for example, when the concealed zipper is applied to a seat cover of an automobile, etc., since the seat cover is usually formed smaller than the shape of the buffer body, the hidden pull of the component when it is saliva or in a salivating state is left and right. The zipper strips have a strong tensile stress applied to the length and width of the tape. However, when the conventional concealed zipper is subjected to the tensile stress as described above, a gap is likely to occur between the left and right chain cloths, or the meshing of the components is lost. Further, in the concealed slide fasteners described in the above-mentioned Patent Documents 2 and 2, it is also difficult to receive a torsional force or a pushing force, for example, a concealed zipper that is sewn into clothes or the like is subjected to a torsion force or a pressing force, and has a component. The meshing section is easily deformed or damaged by 140702.doc 201029594 'cannot withstand long-term use. In particular, the element of Patent Document 1 is configured such that when the left and right elements are engaged, the sides of the respective portions of the engaging portion are in close contact with each other, so that the buckle has rigidity and lacks flexibility at the time of the discount chain, so that it cannot be smoothly performed. Zigzag # is missing. In another aspect, the element of the aforementioned Patent Document 2, when the left and right elements are sprayed, i, the front and rear engaging faces of the opposite side of the element support the end angles of the tape in the longitudinal direction of the head, and the left side is adjacent to each other. The Φ engaging faces of the square elements are not closely connected to each other, so that it is easy to perform the zigzag operation of the long side direction of the zipper, but since the engaging head portion is extended by the base portion (main body) of the element through the narrow neck portion, There is a lack of deformation or breakage of the engaged head or neck. In order to solve this problem, according to Japanese Laid-Open Patent Publication No. 2007-1 5 1839 (Patent Document 3), it is proposed that the concealability and the meshing strength are excellent, the tape width direction is subjected to tensile stress, and no gap is formed between the left and right chain cloths. And the buckle element for the hidden zipper 0 that is subjected to twisting or pushing pressure, and which does not deform or break. Patent Document 1: Japanese Patent Application Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. 2,598, 345, Patent Document No. 2, 598, 345, and the disclosure of the present invention. The fastening element for the concealed zipper proposed in Document 3 includes a C-shaped base portion that holds the core cord portion, and a flat-shaped first and second cloth ▼ gripping portion 'which is formed by the C-shape Each of the front ends of the base extends substantially parallel to the direction of 140702.doc 201029594, and has a flute that grips the side edge portion of the chain cloth on the long side, the facing surface of the chain cloth, = the belt clamping surface '· and ... a front end of the formed base portion and the second cloth surface of the second tape holding portion; the joint portion has a neck portion that is in contact with the second tape holding portion, and the neck portion The armor portion of the adult a dog is protruded beyond the front end surface of the second tape holding portion, and the shoulder portion is constituted by the end surface of the C-shaped base portion f. Further, the plane of the neck portion of the second tape holding portion is excluded, and the plane of the neck portion constitutes an engaging surface. The ❹ structure is characterized in that the front end surface of the i-th tape holding portion is formed to be wider than the front end surface of the second tape holding portion 4, and more preferably the second tape holding portion is formed. The bayonet surface is formed on the upper surface of the four-head portion of the jetting portion, and an inclined surface that is inclined upward is formed from the base end of the engaging surface toward the front end. With the configuration including the feature, when the engaging portions of the left and right elements are in contact with each other, the engaging head portion of the square member is guided by the opposing engaging surface and is slid downward to the lowering surface to the spray position, and When the component is coupled to the ❹, the area of the front end of the first tape holding portion is increased by the left and right sides of the chain cloth, which is larger than the conventional case, and the chain cloth can be stably pushed by the both sides between the left and right elements. Therefore, even if the hidden zipper is subjected to tensile stress, it can effectively prevent gaps between the left and right key cloths, and the excellent stability of the hidden zipper can be ensured. However, 'the concealed zipper exhibits an expansion of the application to the various fields as described above'. As a result of the above-mentioned Patent Document 3, the concealed zipper attached to the product is subjected to a twisting force or a pressing force, and the original It can improve the joint strength and component concealment of the components, and it is difficult to deform or break the head or neck. However, it may be due to the applicable field, and it may not be able to cope with the specific concept of the field. Examples of requirements. For example, in recent years, many automotive seats have gradually tended to be fitted with airbag devices. In the seat cover for a seat device that mounts the airbag device, the seat cover is not covered with the seat cover as in the past, and the seat cover shape is generally the same as the conventional one, but it is necessary In the event of a situation that causes the airbag device to act, the airbag is inflated and deployed in a specific direction outside the seat in an instant and smoothly, so that the deployment portion of the seat cover must also be quickly and surely received at the moment of inflation of the airbag. Expand. Therefore, in the past, the fragile wire or the plastic part was used in the unfolding portion of the seat cover of the cover-mounted airbag device, and the airbag can be quickly and surely deployed at the moment of the inflation pressure of the airbag. However, in the case of using such a fragile wire or plastic part, it is necessary to sew a low-stretch fabric on the back of the skin of the expansion portion of the seat cover when using the fragile wire. Increasing the complexity of seat manufacturing can also lead to an increase in the cost of work and materials. Further, in the case of using a fragile plastic part, when the expanded portion of the seat cover is unfolded, the plastic part is broken and the broken piece is easily splashed to the periphery. In this case, it is particularly important that the unfolding portion of the seat cover of the seat of the automobile or the like in which the airbag device is mounted is required to ensure the appearance of the appearance, and when the airbag device is actuated, the airbag is inflated and deployed. At the same time, the unfolding portion of the seat cover is also rapidly unfolded, and it is required to be able to manufacture the aforementioned expansion portion of the seat cover at a reasonable cost. In order to cope with such requirements, the object of the present invention is to provide the advantages of the hidden zipper of the above-mentioned 140702.doc 201029594, and to make up for the shortcomings thereof, and to maintain the good as a seat cover for an automobile seat equipped with an airbag device. Aesthetically, in the airbag device: a concealed zipper that allows the deployment of the seat cover to be quickly and smoothly unfolded. Technical means of solving problems
為達成上述目的，本發明所提供之扣結元件之最主要特 徵在於：作為基本的構成，其係包含：以狀基部，其係 抱持芯繩部；平板狀之第丨及第2布帶失持部其係由該c 字狀基部之各前端大致平行地向同一方向延伸，在其各/對 向面具有夹持鏈布之侧緣部之第i及第2布帶夾持面；及嚙 合部’其係-體地形成於前述c字狀基部之前端及與前述 第2布帶夾持部之前述第2布帶夾持面相反側之背面間而構 成；該嚙合部係具有與前述第2布帶夾持部之前述背面一 體化之頸部、由該頸部越過前述第2布帶夾持部之前端面 而延伸之嚙合頭部及由前述c字狀基部之前端面所構成之 肩部而構成之隱藏式拉鏈用之扣結元#;前述第2布帶夾 2部之前述背面與相對方之前述嚙合頭部係形成以前述c 字狀基部之中心為中心而容易相對地旋動之形狀。 又，依據理想之態樣，對前述頸部之布帶長度方向之前 後寬度尺寸W2與前述嚙合頭部之布帶長度方向之前後伸 出寬度W1之比值W2/W1為0.55〜0.75。 在包含此構成之隱藏式拉鏈用之扣結元件中，上述容易 相對地旋動之形狀之代表性的態樣在於：將與前述第2布 帶夾持部之前述第2布帶夾持面相反側之背面之排除前述 頸部之卡合面形成使由該卡合面之c字狀基部側之基端至 140702.doc 201029594 可局部地㈣目財之扣結元紅妨㈣ 之中間部平行於前述第2布帶央持部之τ表面之點:面接: :前=間部為起點形成向上方屈曲至前端之::面並 合時二前述起點係以在與相對方扣結元件之唾 想。另外，前述屈曲面:要前端部附近較為理 膨服而之f曲面即可係向上傾斜之傾斜面或向下方In order to achieve the above object, the most important feature of the fastening component provided by the present invention is that, as a basic configuration, the base component comprises: a base portion that holds the core rope portion; and a flat third and second tape. The missing portion extends in the same direction substantially from the front ends of the c-shaped base portions, and has the i-th and second tape clamping faces that sandwich the side edge portions of the chain cloth on the respective opposite/opposing surfaces; And the meshing portion is formed integrally between the front end of the c-shaped base portion and the back surface opposite to the second tape holding surface of the second tape holding portion; the meshing portion has a neck portion integrated with the back surface of the second tape holding portion, an engaging head portion extending from the neck portion before the end surface of the second tape holding portion, and a front end surface of the c-shaped base portion The zipper for the hidden zipper is formed by the shoulder portion; the front surface of the second tape clip 2 portion and the opposite meshing head portion are formed so as to be easily centered on the center of the c-shaped base portion The shape of the ground. Further, according to an ideal aspect, the ratio W2/W1 of the front and rear width W2 of the tape length direction of the neck portion to the tape width direction of the engaging head portion is 0.55 to 0.75. In a fastening element for a concealed slide fastener having such a configuration, the shape of the above-mentioned second cloth holding portion is representative of the shape of the second tape holding portion. The opposite side of the back side of the back surface of the neck portion is formed so that the base end of the c-shaped base side of the engaging surface is 140702.doc 201029594, which can be partially (four) the middle part of the deduction of the elementary red (4) a point parallel to the surface of the τ of the second tape holding portion: face-to-face: : front=intersection is a starting point to form an upward buckling to the front end: when the faces are merged, the aforementioned starting point is to be fastened to the opposite side I think about it. In addition, the above-mentioned curved surface: the f-curved surface which is more suitable for the vicinity of the front end portion can be inclined upward or downward.
又’依據另一代表性的態樣，前述容易相對地旋動之形 狀糸形成為將前㈣合頭部之前端稜線部倒角之倒角部。 作為前述倒角部，只要係形成為向唾合頭部之前端部傾斜 之傾斜面或彎曲面即可。 /依據又另-代表性的態樣’作為前述容易相對地旋動之 V狀也可採用使别述喊合頭部之與前述第2布帶失持部 側相反側之表面向前端上方之上傾斜面或凸狀之-曲面之 形狀。 从本發明之第2基本的構成之隱藏式拉鍵之特徵在於：沿 著對鏈布之TL件安裝緣部以特定間隔列設有上述扣結元 件在將別述鍵布之兀件安裝緣部翻折成大致叫狀之狀 態下，將滑件插通於前述扣結元件所構成。 【實施方式】 發明之效果 在裝疋有亂囊裝置之汽車用座椅之椅套之展開部採用上 述專利文獻3所§己載之隱藏式拉鍵用之扣结元件時，氣囊 裝置之氣囊開始膨脹而其膨脹壓由隱藏式拉鏈之内側起作 140702.doc 201029594 用並意圖鬆脫扣結元件之嚙合時，互相分離之方向之力 (橫拉力）會作用於左右之鏈布互相離開之方向，即布帶寬 度方向。此橫拉力起作用時，處於嚙合狀態之扣結元件彼 此在以其嚙合頭部為中心由c字狀基部之各前端大致平行 地向同一方向延伸之第1及第2布帶夾持部中，以使各鏈布 本體侧之第1布帶夾持部互相分離之方式以扣結元件之响 合頭部為中心旋動而意圖由相對方之嚙合頭部鬆脫。 然而，在如上述專利文獻丨〜3所記載之以往之隱藏式拉 鏈用元件中，其卡合部之嚙合強度過大而不容易鬆脫，進 一步施加氣囊之強大之膨脹壓時，扣結元件彼此會一面維 持唾合狀態，-面將意圖以扣結元件之唾合頭部為中心而 旋動之不當力量施加至鍵布之寬度方 之喷合頭部或第2布帶夾持部破裂， 賤’不僅延遲氣囊之膨脹展開時間， 擊傷乘客。 向’常導致扣結元件 其破裂碎片向周邊飛 且破裂碎片容易直接Further, according to another representative aspect, the shape 糸 which is relatively easy to be relatively rotated is formed as a chamfered portion which chamfers the front ridge line portion of the front (four) joint head. The chamfered portion may be formed as an inclined surface or a curved surface that is inclined toward the end portion of the saliva head. / according to the other-representative aspect, the V-shaped shape that is relatively easy to be relatively rotated may be used to make the surface of the head of the shouting head opposite to the side of the second tape missing portion toward the front end. The shape of the upper inclined surface or the convex-curved surface. The concealed pull key according to the second basic configuration of the present invention is characterized in that the fastening member is arranged at a predetermined interval along the TL member attachment edge portion of the pair of links, and the attachment member of the other key cloth is attached. In a state where the portion is folded into a substantially called shape, the slider is inserted into the fastening member. [Embodiment] The effect of the invention is that the airbag device airbag is used in the unfolding portion of the seat cover of the automobile seat equipped with the chaotic device. When the expansion begins and the expansion pressure is made by the inner side of the concealed zipper, 140702.doc 201029594, and the force of the direction of separation (straight tension) acts on the left and right chain cloths when they are intended to loosen the engagement of the fastening elements. Direction, that is, the width direction of the tape. When the transverse pulling force acts, the engaging elements in the engaged state are in the first and second tape holding portions which extend in the same direction substantially in parallel with the respective tips of the c-shaped bases around the engaging head portion. In order to separate the first tape holding portions on the main body side of each of the chain fabrics from the center of the engaging portion of the fastening elements, it is intended to be loosened by the opposing engaging heads. However, in the conventional concealed slide fastener element described in the above-mentioned Patent Documents 丨 to 3, the engagement strength of the engagement portion is too large to be easily released, and when the strong inflation pressure of the airbag is further applied, the fastening members are mutually engaged. While maintaining the salivation state, the surface is intended to be applied to the width of the key cloth by the improper force of the twisting element centering on the saliving head of the fastening element, or the second tape holding portion is broken.贱 'Not only delays the expansion and deployment time of the airbag, but also hurts the passengers. To the 'often causing the fastening element, its ruptured fragments fly to the periphery and the rupture debris is easy to directly
7C 本發明人等曾透過各種實驗致力於探究以往此種扣 件之破裂原因何在。其結果’獲悉：纟以往之扣… 中，响合之扣結元件彼此之喷合頭部之喷合面與相對方之 二第2布帶夾持部之唾合部側之卡合面之間之面接觸(s 卡。）之面積過大，意圖鬆脫扣結元件彼此 頭:之前端部會-面在相對方之卡合面上滑動，一面I: 部為中心之旋動動作，㈣合頭部與相對方 部之破裂。 、於導致喷合項部及/或第2布帶夹衣 140702.doc 201029594 因此，在本發明中’藉由採用上述特徵的構成，使前述 唾合頭部之旋動動作更為容易，一面在通常狀態時確保所 需之喃口強度’ φ在氣囊裝置作動時，使氣囊之膨服展 開力作用於座椅展開部之瞬間，容易解除嗜合狀態。其結 I ’在囊裝置作動時，使氣囊之膨脹展開動作不會發生 時門的延if J_不會發生扣結元件之破壞。本發明之上述 橫拉力以在6〇〜200 N/2.54 cm之範圍為宜。小於6〇 N/2 54 ❹cm時，喊合強度過低’扣結元件之唾合會簡單地鬆脫。超 過200 N/2.54 cm時，4囊之膨脹展開時間之延遲較多，且 會頻頻發生扣結元件之破壞。又，扣結元件之破裂強度也 會因其使用材質而有大的差異。例如贿或ρ〇Μ之硬度雖 高，但脆性大而容易破裂，但例如^因脆度低，故難以破 裂。 在本發明中’前述頸部之布帶寬度方向之前後寬度尺寸 W2與前述嚙合頭部 < 同樣布帶寬度方向《前後方向之伸 • 出寬度W1之比值W2/Wl小於。.55時，與相對方之扣結元件 之喝合強度會增高，大於〇.75時，與相對方之扣結元件之 响合強度會極端變低，兩者均不耐實用。 如此，在左右之扣結元件之通常嚙合時，相對方之扣結 元件之嚙合頭部之前端部局部地與第2布帶夾持部之嚙合 部側之卡合面之平坦面面接觸而處於卡合狀態。現在，假 設氣囊開始膨脹而意圖使扣結元件分離之強力的拉力作用 於左右之鏈布時，例如前述卡合面之平坦面部分與前端部 分卡合之相對方之扣結元件之嚙合頭部之前端部分會向連 140702.doc -11 - 201029594 續於平坦面之屈曲面移動而使嚙合頭部相對地旋動故容 易由前述卡合面鬆脫。其結果，在氣囊之展開膨脹時，可 使嚙合頭部與相對方之卡合面之卡合順利鬆脫，不需要對 嚙合頭部與卡合面作用超過所需之力，可打開扣結元件， 且氣囊也容易展開。藉此，不會引起扣結元件之破裂，且 氣囊也無時間延遲地在適切之時間膨脹展開。 藉由將前述屈曲面之前述起點設置在與相對方扣結元件 之時之相對方扣結元件之响合頭部之前端部附近，前 述屈曲面在扣結元件之通常嚙合時，氣囊之開始膨脹展開❹ 時之強大的膨脹壓作用於處在嚙合狀態之扣結元件而使其 轉移至解除响合狀態時’可圓滑地實現响合解除，而不會 有過大之負擔施加至彼此之嘴合元件。 又，將前述嚙合頭部之前端稜線部倒角，或使前述嚙合 頭4之與刖述第2布帶夾持部侧相反側之表面彎曲成向前 端上方傾斜之上傾斜面或凸狀，也可使嚙合頭部容易相對 地旋動而容易由前述卡合面鬆脫。 具有此等構成之扣結元件對於沿著—對鏈布之元件安寰© 緣Ρ 乂特疋間隔列设’且將前述鏈布之元件安裝緣部翻折 成大致υ字狀之隱藏拉鍵，特別有效。 - 以下’列舉實施例，一面參照圖式，一面詳細說明有關 實施本發明用之最佳型態。 實施例1 圖1係由表示本發明之第丨實施例之扣結元件之整體之元 件露出側所視之立趙圖，圖2係該扣結元件由元件隱蔽側 140702.doc -12- 201029594 所視之立體圖，圖3係該扣結元件之侧面圖。又，圖4係該 扣結兀件之嚙合狀態之側面圖，圖5係表示左右之鏈布之 橫拉力作用於該嚙合扣結元件而解除嚙合時之狀態之側面 圖。圖6係圖5之要部放大剖面圖。 . 扣結元件1係形成有裝定鏈布22之布帶側緣部之布帶側 緣部裝定溝10之整體呈大致U字狀，包含：C字狀基部2， 其係抱持鏈布22之芯繩部25 ;平板狀之第i布帶夾持部3及 φ 帛2布帶炎持部4 ’其係由°字狀基部2之各前端大致平行地 被延設；及嚙合部5,其係一體化於接觸與第2布帶夾持部 4之布帶夾持面U相反侧之背面之卡合面_。第ι布帶夾 持部3與第2布帶夾持部4係對c字狀基部2，大致微向第碑 帶夾持部側傾斜而大致微向斜上方賢起。其結果，布帶侧 緣部裝定溝1〇也整體地向同方向（以下稱為上方）傾斜。 在本實施例之扣結元件丨令，設有在c字狀基部2之上下 方向之大致中心部抱持芯繩部25之圓形抱持孔Μ，由此圓 ❹ 形抱持孔1 4向斜上方形成有上述布帶側緣部裝定溝丨〇。 又，在此雖省大致圖示，但在布帶侧緣部裝定溝10之大致 中央，例如也可形成如前述專利文獻2所記載之連結第π 帶失持部3與第2布帶夾持部4之連結部。藉由設置此種連 結部，可使扣結元件1牢固地固著於鏈布22之特定處。 -體化於第2布帶失持部4之卡合面12側之嚙：部5係且 有呈長圓形狀之妨頭部6、中間細狀之顯部7、及由以 狀基部2之-部分前端部所形成之肩·。卡合㈣ 配置在頸部7及肩部8之左右兩側，由肩部8延伸至唾合頭 140702.doc •13· 201029594 ί頸部7及肩部8伸出成冑狀。前述喷合 :述第2布帶夹持部4之卡合面一側延伸。在= :頌部6、頸部7、肩部8及卡合面。之間形成鳴合空間。 本實施例中，最主要特徵在於第2布帶夹持部4， β 其卡合面12之形狀。 、疋 合面12如圖i〜圖3所示，延伸至由構成布帶側緣部裝 定溝1〇之基端部之上述圓形抱持孔14之連通部至嚙合頭部 6之間’但其形狀並非如上料利讀⑷所記栽之單純 =同一平面，而係在前述連結部與嚙合頭部6之間之中間 12C ’由水平面12a被切換成上傾斜面12b。前述中間部 12c如圖4所示，在與相對方之扣結元件1之嚙合時，相當 於足以僅使相對方之嚙合頭部6之前端部分大致微與前： 水平面12a局部地面接觸之部位。在此，使相對方之喷人 碩部6之前端部分大致微與水平面12a面接觸，係為了在扣 結元件彼㈣合時，可藉由來自外部之推升力使各扣結元 件1不能簡單地向上下方向移動’而在隱藏式拉鏈之通常 喷合時，不容易引起哺合裂開之故。 由卡合面12之前述中間部12c至前端之上傾斜面i2b具有 不會對嚙合元件彼此施加過大之負擔而可圓滑地實現由圖 4所不之扣結元件丨之通常嚙合時轉移至未圖示之氣囊之開 始膨脹展開時之強大的膨脹壓作用於處在嚙合狀態之扣結 元件1時之圖5所示之解除嚙合狀態之功能。 即，扣結元件1彼此之通常嚙合時，圖4所示，不過是相 對方之嚙合頭部6之前端部分大致微面接觸於左右之扣結 _02.doc -14-7C The present inventors have conducted various experiments to investigate the causes of the rupture of such fasteners in the past. As a result, it is known that: in the conventional buckle, the engaging surface of the jointing member of the ringing member and the opposite side of the second side of the second belt holding portion The area of the surface contact (s card.) is too large, and it is intended to loosen the fastening elements to each other: the front end will be-sliding on the opposite side of the engaging surface, and the side I: the part will be the center of the rotating motion, (4) The rupture of the head and the opposite side. Therefore, in the present invention, the swirling action of the saliving head is made easier by using the above-described features. When the airbag device is actuated in the normal state, the inflation force of the airbag is applied to the seat deployment portion, and the accommodating state is easily released. When the capsule device is actuated, the expansion and deployment of the airbag does not occur, and the extension of the door does not occur. The above transverse pulling force of the present invention is preferably in the range of 6 〇 to 200 N / 2.54 cm. When it is less than 6〇 N/2 54 ❹cm, the strength of the shouting is too low. When it exceeds 200 N/2.54 cm, the expansion time of the expansion and expansion of the four capsules is large, and the destruction of the fastening components frequently occurs. Moreover, the breaking strength of the fastening component is also greatly different depending on the material used. For example, although the hardness of bribes or 〇Μ is high, it is brittle and easily broken, but for example, it is difficult to break due to low brittleness. In the present invention, the front width dimension W2 of the neck tape width direction and the aforementioned engaging head portion < the same tape width direction "the ratio W2/Wl of the width W1 of the front-rear direction is smaller than the width W2/Wl. At .55, the strength of the engagement with the opposite side of the fastening element will increase, and when it is greater than 〇.75, the coupling strength with the opposite side of the fastening element will be extremely low, and both are not practical. In this manner, when the right and left fastening elements are normally engaged, the front end portion of the engaging head portion of the opposite side fastening member is partially in contact with the flat surface of the engaging surface side of the meshing portion side of the second tape holding portion. In a stuck state. Now, assuming that the airbag starts to expand and the strong pulling force, which is intended to separate the fastening elements, acts on the left and right chain cloths, for example, the engaging heads of the opposite side engaging elements of the flat surface portion of the engaging surface and the front end portion are engaged. The front end portion will move to the flat surface of the flat surface of 140702.doc -11 - 201029594 to make the meshing head relatively rotate, so that it is easy to be loosened by the aforementioned engaging surface. As a result, when the airbag is deployed and inflated, the engagement between the engaging head and the opposite engaging surface can be smoothly released, and the force required to act on the engaging head and the engaging surface does not need to exceed the required force, and the buckle can be opened. Components, and the airbag is also easy to deploy. Thereby, the rupture of the fastening element is not caused, and the airbag is inflated and deployed at an appropriate time without time delay. By setting the aforementioned starting point of the flexing surface to be near the front end of the reciprocating head of the opposite decoupling element at the time of the opposite decoupling element, the flexing surface is initially engaged by the fastening element, the beginning of the airbag When the expansion pressure is released, the strong expansion pressure acts on the engaging element in the engaged state, and when it is transferred to the disengaged state, the ringing can be smoothly achieved without excessive burden being applied to each other's mouth. Combined components. Further, the front end ridge line portion of the engaging head portion is chamfered, or the surface of the engaging head 4 opposite to the second tape holding portion side is bent to be inclined upward or convex toward the front end. It is also possible to easily rotate the engaging head relatively easily to be loosened by the aforementioned engaging surface. The fastening component having such a configuration is provided with a hidden pull key for the component mounting along the edge of the chain fabric and the component mounting edge of the chain fabric is folded into a substantially U-shaped shape. , especially effective. In the following, the preferred embodiments for carrying out the invention will be described in detail with reference to the drawings. [Embodiment 1] Fig. 1 is a perspective view showing an exposed side of an element showing a whole of a fastening component of a third embodiment of the present invention, and Fig. 2 is a concealing side of the fastening component by a component concealing side 140702.doc -12- 201029594 3 is a side view of the fastening element. Further, Fig. 4 is a side view showing the meshing state of the buckle member, and Fig. 5 is a side view showing a state in which the lateral pulling force of the left and right chain fabrics acts on the engagement fastening member to disengage. Figure 6 is an enlarged cross-sectional view of the essential part of Figure 5. The fastening element 1 is formed with a tape side edge portion of the tape loop 22, and the tape side edge portion defining groove 10 has a substantially U-shape as a whole, and includes a C-shaped base portion 2, which is a holding chain. The core rope portion 25 of the cloth 22; the flat i-th belt holding portion 3 and the φ 帛2 cloth belt holding portion 4' are extended substantially parallel to the respective front ends of the °-shaped base portion 2; The portion 5 is integrated with an engaging surface _ that contacts the back surface on the opposite side of the tape holding surface U of the second tape holding portion 4. The first yoke tape holding portion 3 and the second tape holding portion 4 are paired with the c-shaped base portion 2, and are substantially slightly inclined toward the side of the monument band holding portion, and are substantially slightly inclined upward. As a result, the tape side edge portion setting groove 1 is also inclined in the same direction (hereinafter referred to as "upward") as a whole. In the fastening element of the present embodiment, a circular holding hole 抱 which holds the core portion 25 at a substantially central portion in the downward direction of the c-shaped base portion 2 is provided, whereby the circular holding hole 14 is held. The tape side edge portion setting groove is formed obliquely upward. In the meantime, the center of the tape is provided in the vicinity of the groove 10, and the π-belt-worn portion 3 and the second tape described in Patent Document 2 may be formed, for example. The joint portion of the grip portion 4. By providing such a joint, the fastening element 1 can be firmly fixed to a specific portion of the chain fabric 22. The body portion of the second tape missing portion 4 on the side of the engaging surface 12 is a portion 5 having an oblong shape, a thin portion 7 in the middle, and a base portion 2 - The shoulder formed by the front end portion. The snaps (4) are disposed on the left and right sides of the neck portion 7 and the shoulder portion 8, and extend from the shoulder portion 8 to the saliving head 140702.doc • 13· 201029594 ί The neck portion 7 and the shoulder portion 8 protrude into a shape. The spraying is performed on the side of the engagement surface of the second tape holding portion 4. At = : crotch part 6, neck 7, shoulder 8 and the engaging surface. A harmony space is formed between them. In the present embodiment, the most important feature is the shape of the second tape holding portion 4, β the engaging surface 12. As shown in FIG. 1 to FIG. 3, the coupling surface 12 extends between the communicating portion of the circular holding hole 14 of the base end portion of the groove 1 constituting the side edge portion of the tape to the engaging head portion 6. 'But the shape is not the same as the plain = the same plane recorded in the above (4), and the intermediate portion 12C' between the joint portion and the engaging head portion 6 is switched from the horizontal surface 12a to the upper inclined surface 12b. As shown in Fig. 4, the intermediate portion 12c, when engaged with the opposite side fastening element 1, corresponds to a portion which is sufficient to make only the front end portion of the opposite engaging head portion 6 substantially slightly in contact with the front: horizontal plane 12a. . Here, the front end portion of the opposite side of the sprayed person 6 is substantially in surface contact with the horizontal surface 12a, so that the buckle member 1 can be made simple by the pushing force from the outside when the fastening member (4) is engaged. The ground moves in the up and down direction, and when the concealed zipper is normally sprayed, it is not easy to cause the graft to split. The intermediate portion 12c of the engaging surface 12 to the inclined surface i2b above the front end has a burden that does not impose an excessive force on the engaging elements, and can smoothly realize the transition from the normal engagement of the fastening member of FIG. The strong inflation pressure at the time of initial expansion of the illustrated airbag acts on the disengagement state shown in Fig. 5 when the fastening element 1 is engaged. That is, when the fastening elements 1 are normally engaged with each other, as shown in Fig. 4, the front end portions of the engaging heads 6 of the opposite side are substantially slightly in contact with the left and right buckles _02.doc -14-
201029594 件1之第2布帶夾持部4之前述水平面以。此面接觸之面 積可由扣結元们之大小加以變更，不能一概而定， 發明之隱藏式拉鏈21例如㈣用於絲於裝定有氣囊裝 之車輛用之座椅之未圖示之椅套時，或通常之拉力作用於 使左右之鏈布22互相離開之方向時、㈣處㈣合狀態之 扣結7L件1之上推力等外力發揮作料也只要具有以相 對方之第2布帶夾持部4之水平面Ua推壓扣結元件i而可維 持其嚙合姿勢使其不走樣之充分之面積即可。 '依據本實施例，在與上述第2布帶夾持部4之前端部“直 角相交之喷合頭部6之上面13(圖2)，以連結前述前端部Μ 與唾合頭部上面13之方式西己設有在平面視上呈矩形狀，在 側面視上呈直角三角形狀之補強部9。在本實施例之扣結 兀件1中，如前所述，經由細的頸部7設置嚙合頭部6，且 使嚙合頭部上面13與前端部16直角相交，故嚙合部5之強 度雖令人擔心，但藉由設置前述補強部9，可充分確保嚙 合部5之強度，例如，在強的扭轉力或推壓力等施加至處 於响合狀態之扣結元件1之情形，也可防止嚙合部5之變形 或破損。又，因在平面視上呈矩形狀，故可補強嚙合頭部 6之上面整體，即使氣囊之強大之膨脹壓起作用，也可充 分承受其壓力’不容易破損。又’此補強部9如圖9所示， 也可在平面視上不形成矩形狀，而將整體形成三角錐形 狀。 另外’在本實施例之頸部7及嗜合頭部6之與第2布帶夾 持部側相反側之面，即在與形成前述補強部9之面相反側 140702.doc •15- 201029594 之表面（下表面）’如圖丨〜圖3所示，形成有向嚙合頭部6之 刖端彎曲之彎曲面6a。又，也可取代彎曲面6a而形成向嚙 合頭部之前端而向上傾斜之上傾斜面。藉由形成彎曲面以 或上傾斜面，可使嚙合頭部6之上下方向之壁厚向嚙合頭 部6之前端逐次減少。此係為了在橫拉力作用於左右之鏈 布22時，例如如圖5所示，使扣結元件1本身以位於c字狀 基部2之中心之芯繩部25為中心而容易向鏈布22之橫拉力 方向旋動之故。 饭设，在扣結元件丨處於圖4所示之通常之嚙合狀態時之 隱藏式拉鏈21，例如未圖示之氣囊裝置作動而氣囊開始膨 脹展開，其強大之膨脹壓作用於各扣結元件丨時，處於嚙 合狀態之扣結元件i會在瞬間轉移至圖5所示之嚙合解除狀 態。即，藉由氣囊開始膨脹時之膨脹壓，強力之拉力作用 於左右之鏈布22之分離方向，使左右之扣結元件i分別以 芯繩部25為中心而迅速向鏈布22之橫拉力方向旋動。此 時，大致微面接觸於第2布帶夾持部4之水平面12&之相對 方之嚙合頭部6之前端部分會在前述水平面12a滑動而瞬間 轉移至連續於水平面12a之上傾斜面12b，在與上傾斜面 12b保持點接觸狀態而被上傾斜面m導引而可毫無阻力地 移動。 如此，嚙合頭部6之前端部分轉移至上傾斜面12b時，嚙 合頭部6之前端部分會被上傾斜面12b導引而容易毫無阻力 地滑動，各扣結元件i以其中心部之芯繩部乃為中心而迅 速向鏈布22之拉力方向旋動，故容易施解除各扣結元件工 140702.doc -16- 201029594 之嚙合。扣結元件〗旋轉時，即使設於嚙合頭部6之下表面 之彎曲面6a與上傾斜面i2b相面對，也可確保較寬之彎曲 面6a與上傾斜面ub之間之間隙，可避免旋轉時彎曲面以 與上傾斜面12b相干擾。 其結果’氣囊裝置作動時，氣囊之膨脹壓產生之過大力 量不會施加至第2布帶夾持部4及响合部5，故扣結元件1不 會破裂。附帶言之，相對於專利文獻1〜3所記載之隱藏式 拉鍵之展開所需之橫拉力超過25〇 N/2.54 cm，本發明之橫 拉力可以較低之力60〜2〇〇 N/2.54 cm展開。 圖12係表示此第1實施例之變形例*依據此變形例，並 未使前述水平面12a與前述上傾斜面12b屈曲而連續，即不 將水平面12a與上傾斜面12b之屈曲切換部之中間部i2c形 成屈曲面，而可將上傾斜面12b形成為向連續於水平面Ua 之下方膨出之彎曲面。 實施例2 • 圖6係表示有關本發明之扣結元件之第2實施例。在本^ 施例中，扣結元件i之主要部之構造亦與上述第Θ施例， 質上並無變化。本實施例之特徵的構成在於規定扣結元令 1之鳴合頭部6與頸部7之相對的尺寸關係之點。因此，名 以下之說明中，在實質上對庙^ V ι_丄 頁買上對應於上述第1實施例之部分之 名稱及符號，使用同一之名稱及符號。 n如圖，扣結元件1之嘴合部5具有在平面視上呈橢 圓形之嘴合頭部6、與由該喷合頭心之長捏部在十央變細 而向C字狀基部2之前端面之肩部8延伸並連結於該肩部8之 140702.doc 201029594 頸部7。依據此第2實施例，假設嚙合頭部6之嚙合方向（同 圖之上下方向）之最大寬度尺寸為W1，頸部7之同方向之最 小寬度尺寸為W2時，將對前述最大寬度尺寸wi之前述最 小寬度尺寸W2之比值W2/W1規定於0.55〜0.75之範圍。此 比值W2/W1小於〇·55時，頸部7之細化過大而使扣結元件 彼此之橫拉強度增高，氣囊裝置之作動也不容易解除嚙 合’且過大之負荷會施加至嚙合周邊部而容易損壞。 W2/W1超過0.75時，頸部7之細化過小而使扣結元件彼此 之橫拉強度過弱，在氣囊裝置未作動時，扣結元件彼此之 嚙合也會簡單地鬆脫。 在本實施例中，扣結元件〗之材質使用ρ〇Μ，前述比值 W2/W1設定於〇.69，其扣結元件彼此之橫拉強度為丨⑻ 2.54 Cm，與W2/W1之值〇 48之同一材質所構成之通常之扣 結元件之橫拉強度250 N/2.54 cm相比時，呈現強度1/5 之低值。本實施例之橫拉強度1〇〇 N/2 S4 cm之值在氣囊 裝置作動時，也可減少未圖示之椅套之展開部之爆開阻 力，且在通常之使用中，呈現可維持扣結元件之嚙合之強 度。 實施例3 圖7及圖8係表示隱藏式拉鏈用之本發明之第3實施例之 扣結元件與其旋動時之狀態。 在本實施例，異於上述第〗及第2實施例之處在於：相對 於在第1及第2實施例中，與相對方之第2布帶夹持部4之卡 合面面接觸之相對方之唾合頭部6之上面13(圖2之上面） 140702.doc •18- 201029594201029594 The first horizontal belt of the first belt has the above-mentioned horizontal plane. The area of contact with this surface can be changed by the size of the buckle element, and the hidden zipper 21 of the invention is, for example, (4) used for the seat cover of a vehicle for mounting a vehicle equipped with an airbag. When the normal tension is applied to the direction in which the left and right chain fabrics 22 are separated from each other, the external force such as the thrust of the buckle 7L on the (4) joint state is used as the material, and the second belt clamp is provided in the opposite side. The horizontal plane Ua of the holding portion 4 presses the fastening element i to maintain the meshing posture so as not to have a sufficient area for the sample. According to the present embodiment, the upper surface 13 (Fig. 2) of the jetting head portion 6 which intersects the end portion of the second tape holding portion 4 at right angles is connected to the front end portion Μ and the upper surface of the saliving head portion 13 The method is provided with a reinforcing portion 9 having a rectangular shape in a plan view and a right-angled triangular shape in a side view. In the fastening member 1 of the present embodiment, as described above, the thin neck portion 7 is provided. Since the engaging head portion 6 is provided and the engaging head portion 13 intersects the front end portion 16 at right angles, the strength of the engaging portion 5 is a concern, but by providing the reinforcing portion 9, the strength of the engaging portion 5 can be sufficiently ensured, for example, In the case where a strong twisting force or a pressing force is applied to the fastening member 1 in the reciprocating state, deformation or breakage of the engaging portion 5 can be prevented. Further, since it is rectangular in plan view, the meshing can be enhanced. The entire upper surface of the head 6 can fully withstand the pressure even if the strong inflation pressure of the airbag acts, and it is not easily broken. Further, the reinforcing portion 9 can be formed in a rectangular shape in plan view as shown in FIG. And the whole will form a triangular pyramid shape. In addition, the neck of this embodiment The surface of the portion 7 and the fitting head portion 6 on the side opposite to the second tape holding portion side, that is, the surface (lower surface) of the opposite side of the surface forming the reinforcing portion 9 140702.doc • 15 - 201029594 As shown in Fig. 3, a curved surface 6a which is bent toward the end of the engaging head portion 6 is formed. Alternatively, instead of the curved surface 6a, an inclined surface which is inclined upward toward the front end of the engaging head may be formed. Forming the curved surface or the inclined surface, the wall thickness of the upper and lower sides of the engaging head portion 6 can be gradually decreased toward the front end of the engaging head portion 6. This is for the lateral pulling force to act on the left and right chain cloths 22, for example, as shown in FIG. As shown in the figure, the fastening element 1 itself is easily rotated in the direction of the lateral pulling force of the chain cloth 22 around the core rope portion 25 located at the center of the c-shaped base portion 2. The rice setting is in the figure of the fastening member The concealed zipper 21 in the normal meshing state shown in Fig. 4, for example, the airbag device (not shown) is actuated and the airbag is inflated and deployed, and the strong inflation pressure acts on each of the fastening components ,, and the engaging component is in the engaged state. i will instantaneously shift to the disengaged state shown in Fig. 5. That is, The expansion pressure at the time when the airbag starts to expand, and the strong tensile force acts on the separation direction of the left and right chain cloths 22, so that the left and right fastening elements i are rapidly swung in the lateral pulling force of the chain cloth 22 with the core rope portion 25 as the center. At this time, the front end portion of the engaging head portion 6 which is substantially in contact with the horizontal surface 12 of the second tape holding portion 4 is slid at the aforementioned horizontal surface 12a and instantaneously transferred to the inclined surface which is continuous above the horizontal surface 12a. 12b, guided by the upper inclined surface m while being in point contact with the upper inclined surface 12b, can be moved without resistance. Thus, when the front end portion of the engaging head portion 6 is transferred to the upper inclined surface 12b, the front end of the engaging head portion 6 is engaged. The portion is guided by the upper inclined surface 12b and is slid easily and without any resistance. Each of the fastening elements i is swung in the direction of the pulling force of the chain cloth 22 with the core portion of the center portion as a center, so that it is easy to release each Engagement of the fastening component 140702.doc -16- 201029594. When the fastening member is rotated, even if the curved surface 6a provided on the lower surface of the engaging head portion 6 faces the upper inclined surface i2b, the gap between the wide curved surface 6a and the upper inclined surface ub can be ensured. The curved surface is prevented from rotating to interfere with the upper inclined surface 12b. As a result, when the airbag device is actuated, the excessive force generated by the inflation pressure of the airbag is not applied to the second tape holding portion 4 and the sounding portion 5, so that the fastening member 1 is not broken. Incidentally, the transverse pulling force required for the development of the concealed pull key described in Patent Documents 1 to 3 exceeds 25 〇N/2.54 cm, and the lateral pulling force of the present invention can be a low force of 60 〜2 〇〇 N/ 2.54 cm unfolding. Fig. 12 is a view showing a modification of the first embodiment. According to this modification, the horizontal plane 12a and the upper inclined surface 12b are not flexed continuously, that is, in the middle of the buckling switching portion between the horizontal plane 12a and the upper inclined surface 12b. The portion i2c forms a curved surface, and the upper inclined surface 12b can be formed as a curved surface that bulges below the horizontal plane Ua. Embodiment 2 Fig. 6 shows a second embodiment of the fastening element of the present invention. In the present embodiment, the configuration of the main portion of the fastening element i is also qualitatively unchanged from the above-described third embodiment. The feature of this embodiment is that the point of the relative size relationship between the head portion 6 and the neck portion 7 of the fastening element 1 is specified. Therefore, in the following description, the names and symbols corresponding to the portions of the first embodiment described above are substantially purchased for the temple page, and the same names and symbols are used. As shown in the figure, the mouth joint portion 5 of the fastening element 1 has a mouth-shaped head portion 6 which is elliptical in plan view, and a long kneading portion from the center of the spray head is tapered at the center of the center to the C-shaped base portion. 2 The shoulder 8 of the front end face extends and is joined to the neck portion of the shoulder portion 8 of 140702.doc 201029594. According to this second embodiment, it is assumed that the maximum width dimension of the meshing direction of the engaging head portion 6 (the upper and lower directions in the same drawing) is W1, and the minimum width dimension of the neck portion 7 in the same direction is W2, which will be the aforementioned maximum width dimension wi. The ratio W2/W1 of the aforementioned minimum width dimension W2 is specified in the range of 0.55 to 0.75. When the ratio W2/W1 is less than 〇·55, the refinement of the neck portion 7 is excessively large, so that the tensile strength of the fastening members is increased, the movement of the airbag device is not easily disengaged, and an excessive load is applied to the engagement peripheral portion. It is easy to damage. When W2/W1 exceeds 0.75, the refinement of the neck portion 7 is too small and the tensile members are too weak in tension, and when the airbag device is not actuated, the engagement elements are simply released from each other. In this embodiment, the material of the fastening component is ρ〇Μ, the ratio W2/W1 is set to 〇.69, and the tensile strength of the fastening components is 丨(8) 2.54 Cm, and the value of W2/W1〇 The normal kneading element composed of the same material of 48 has a low tensile strength of 250 N/2.54 cm, and exhibits a low value of 1/5. In the present embodiment, the value of the horizontal tensile strength of 1〇〇N/2 S4 cm can also reduce the popping resistance of the unfolded portion of the seat cover (not shown) when the airbag device is actuated, and can be maintained in normal use. The strength of the engagement of the fastening elements. (Embodiment 3) Figs. 7 and 8 show the state of the fastening element of the third embodiment of the present invention for the concealed slide fastener when it is rotated. In the present embodiment, the second embodiment and the second embodiment are different from each other in the first and second embodiments in that they are in surface contact with the engagement surface of the opposite second tape holding portion 4. The opposite side of the head of the head 6 is 13 (above the top of Figure 2) 140702.doc •18- 201029594
係形成平面，且該上面13與長圓狀之周側面互相正交；在 實彳】中如圖7及圖8所示，使前述嚙合頭部6之至少 前端部之稜線部分正交㈣合方向而形成倒角祕。作為 倒角部6b可列舉彎曲面，但如圖13所示，也可為向唾合 頭部6之前端傾斜之傾斜面。又，在上述實施例中，將由 第布帶夾持σΜ之剛述卡合面12之基端至途中形成為水平 面由該途中向前端形成上傾斜面12b’但在本實施例 中，在形成前述倒角部6b之同時，將前述卡合面12之基端 至刖端形成為同一水平面i2a。 本實施例由於採用前述構成，在扣結元件丨彼此之通常 嚙合時，如® 7所*，左右之扣結元件1之第2布帶夾持部4 之前述水平面12a與相對方之喊合頭部6之排除倒角部❿之 近半部之表面呈現面接觸。此面接觸之面積因扣結元们 之大小或所要求之嚙合強度之大小而異，不能一概而定， 但本發明之隱藏式拉鏈21例如在適用於安裝於裝定有氣囊 裝置之車輛用之座椅之未圖示之椅套時，或在作用於使左 右之鏈布22互相離開之方向之通常之拉力、及對處於嚙合 狀態之扣結元件1之上推力等外力發揮作用時，也只要具 有以相對方之第2布帶夾持部4之水平面12a推壓扣結元件1 而可維持其嚙合姿勢使其不走樣之充分之面積即可。 現在，假設在扣結元件丨處於圖7所示之通常之嚙合狀態 時之隱藏式拉鏈21，例如未圖示之氣囊裝置作動而氣囊開 始膨脹展開，其強大之膨脹壓作用於各扣結元件〗時，在 本實施例中，也與上述第丨及第2實施例同樣地，處在嚙合 140702.doc 19 201029594 狀態之扣結元件i會在瞬間轉移至圖8所示之嚙合解除狀 態。即，藉由氣囊開始膨脹時之膨脹壓，強力之拉力作用 於左右之鏈布22之分離方向，使左右之扣結元件丨分別向 鏈布22之拉力方向旋動。此時，原先與第2布帶夾持部4之 水平面12a廣泛面接觸之相對方之嚙合頭部6之前端之倒角 部6b可無障礙地在相對方之卡合面12上旋轉而如圖8所 示，使扣結元件1WC字狀基部2之中心部為中心而圓滑地 向鏈布22之拉立方向旋動而解除嚙合之扣結元件i之嚙 合0 又，在以上之說明中，雖個別地說明第丨〜第3實施例， 但在本發明中，也可適宜地組合此等之實施例。例如，在 第2實施例中，可組合第丨實施例，或形成第丨實施例之上 傾斜面12b，並也可在嚙合頭部之上面前端部形成倒角部 6b。另外，雖省大致圖示，但也可取代前述倒角部讣，而 形成上傾斜面。此情形，為了在與水平面12a面接觸之相 對方之嚙合頭部6之上面13之間確保所需之接觸面積只 要使上傾斜面12b之起點之卡合面12之中間部大致微向第2 布帶夾持部4之前端侧位移即可。又，例如，也可將第卜 第3實施例之特徵的構成全部加以組合。 將包含有此構成之扣結元件1在一對鍵布22之各元件安 裝緣部以特定間隔列設而形成圖9所示之拉鏈繫條23後， 如圖4所示，在將鏈布22之元件安裝緣部侧翻折成大致1}字 狀之狀態下，將滑件24插通於扣結元件1之元件列而獲得 如圖9所示之隱藏式拉鍵21。在此，圖1〇係本實施例之隱 140702.doc -20. 201029594 藏式拉鏈21由布帶表面側所葙 仏祝之十面圖，圖9係該隱藏式 拉鏈21由布帶背面側所視之背面圖。 有關扣結元件1對鏈布22之安裝，可利用以往-般使用 之手&進行4列如可藉由將鏈布22合成樹脂射出成型為鍵 W2之it件安裝緣部，而將具有特定形狀之合成樹脂製之 扣結元件1裝定於鏈布22。此情形，作為扣結元们之材質 •之合成樹脂，例如可使用聚縮醛、聚對苯二甲酸丁二酯、 φ (龍等又此外’也可藉由施行銅合金、鎳合金、銘等 之壓鑄，而將金屬製之扣結元件丨裝定於鏈布22。 使用此扣結元件1所獲得之隱藏式拉鏈21如圖4所示，係 利用扣結元件1之圓形抱持孔14抱持鏈布22之芯繩部25， 並以扣結元件1之第1布帶夹持部3與第2布帶夾持部4夾持 鏈布22之元件安裝緣部。 又’鍵布22係在第1布帶夾持部3之前端被翻折成大致u 子狀’使滑件24滑動而使安裝於左右之鍵布22之扣結元件 參 1彼此嚙合，藉以如圖4所示，使鏈布22之翻折成大致u字 狀之折邊端面26彼此密貼。藉此，可使隱藏式拉鏈21由鏈 布22之表面側看不見嚙合狀態之扣結元件1。 此隱藏式拉鍵21由於將扣結元件1之c字狀基部2之第1布 帶夾持部3側之後端部彎曲面及第2布帶夹持部4側之後端 部彎曲面之第1外周面18及第2外周面19分別形成圓筒面， 故在滑件24滑動時，可抑制扣結元件1與滑件24之干擾而 可獲得良好之滑動特性，且可進一步獲得如以下之效果。 例如’使滑件24滑動而使左右之扣結元件1嚙合之際， 140702.doc •21· 201029594 向外侧之拉伸應力作用於左右之鏈布22之情形，如圖丨丨之 假想線所示，扣結元件i有可能以對滑件24之扣結元件通 路27傾斜之姿勢進入。此情形，在扣結元件1通過滑件 之扣結元件通路27之際，扣結元件！之第2外周面19會接觸 於滑件24之下板29，且第1外周面18接觸於滑件24之倒[字 狀之凸緣30而向滑件24之後口侧滑動。此際，藉由滑件24 之扣結元件通路27内之形狀，使第2外周面19接觸於滑件 24之下板29 ’且使第1外周面18接觸於滑件24之凸緣3〇， 而使扣結元件1在扣結元件通路27内旋動，可使扣結元件1 之姿勢傾倒成如圖12之實線所示之適於嚙合之姿勢。 即’依據本實施例之隱藏式拉鍵21，即使在扣結元件[ 處於以不適合於傾斜嚙合之姿勢進入滑件24之扣結元件通 路27之狀況下，也可在扣結元件通路27内藉由使扣結元件 1之姿勢傾倒而使左右之扣結元件1確實嚙合，且可獲得確 保穩定之嚙合狀態之優點。 尤其在本實施例中，如前所述’扣結元件1之第2外周面 ^具有大於第i外周面18之曲率半徑。即，如上所述，使 扣結元件1在滑件24内旋動而傾倒成適合於嚙合之姿勢之 情形’第2外周面19與滑件接觸之範圍變得比第i外周面18 寬。因此，由於第2外周面19具有大於第1外周面18之曲率 半徑’可圓滑地施行扣結元件1在扣結元件通路2 7内之旋 動’故可有效且穩定地使扣結元件1傾倒。 【圖式簡單說明】 圖1係本發明之第！實施例之扣結元件由背面側所視之立 140702.doc • 22· 201029594 體圖； 圖2係該扣結元件由表面側所視之立體圖； 圖3係該扣結元件之側面圖； 圖係表不裝定該扣結元件之本發明之隱藏式拉鍵之通 常之嚙合狀態之部分側面圖； 圖5係表示布帶橫拉力作用於本發明之隱藏式拉鏈時之 唾合解除狀態之部分側面圖； 圖6係表示本發明之第2實施例之扣結元件之背面圖； 圖7係表示表示本發明之第3實施例之扣結元件之通常之 啼合狀態之一部分剖面圖； 圖8係表示布帶橫拉力作用時之該扣結元件之嚙合狀態 之一部分剖面圖； 圖9係表示本發明之隱藏式拉鏈之一部分之背面圖； 圖10係表示該隱藏式拉鍵之一部分之表面圖； 圖11係說明將扣結元件導入拉鏈之扣結元件通路内時之 扣結元件之姿勢變化之動態說明圖； 圖12係表示上述第1實施例之變形例由背面侧所視之部 分立體圖；及 圖13係表示土述第3實施例之變形例之扣結元件之部分 侧面圖。 【主要元件符號說明】 1 扣結元件 2 C子狀基部 3 第1布帶炎持部 140702.doc „ 201029594 4 第2布帶夾持部 5 嚙合部 6 嚙合頭部 6a 彎曲面 7 頸部 8 肩部 9 補強部 10 布帶侧緣部裝定溝 11 布帶夾持面 12 卡合面 12a 水平面 12b 上傾斜面 13 嗜合頭部上面 14 圓形抱持孔 15 第1布帶夾持部之前端部 16 第2布帶夾持部之前端部 18 第1外周面 19 第2外周面 21 隱藏式拉鏈 22 鏈布 23 拉鏈繫條 24 滑件 25 芯繩部 26 折邊端面 140702.doc -24- 201029594 27 扣結元件通路 30 凸緣 參 140702.doc -25-Forming a plane, and the upper surface 13 and the oblong circular peripheral side are orthogonal to each other; in the actual embodiment, as shown in FIGS. 7 and 8, the ridge line portion of at least the front end portion of the engaging head portion 6 is orthogonal (four) And the formation of chamfer secret. The chamfered portion 6b may be a curved surface. However, as shown in Fig. 13, the inclined surface may be inclined toward the front end of the saliving head portion 6. Further, in the above-described embodiment, the base end of the engagement surface 12, which is sandwiched by the second tape, is formed in a horizontal plane to form an upper inclined surface 12b' from the middle to the front end. However, in the present embodiment, the upper inclined surface 12b' is formed. At the same time as the chamfered portion 6b, the base end to the end of the engaging surface 12 is formed to be the same horizontal plane i2a. In the present embodiment, since the above-described configuration is employed, when the fastening members 通常 are normally engaged with each other, such as *7*, the aforementioned horizontal surface 12a of the second tape holding portion 4 of the left and right fastening members 1 is opposite to the opposite side. The surface of the head 6 which excludes the nearly half of the chamfered portion is in surface contact. The area of contact with this surface varies depending on the size of the fastener elements or the required engagement strength, and cannot be determined uniformly. However, the concealed zipper 21 of the present invention is suitable for use in a vehicle equipped with an airbag device, for example. When a seat cover (not shown) is used, or when a normal pulling force acts in a direction in which the left and right chain cloths 22 are separated from each other, and an external force such as a pushing force on the engaging element 1 in the engaged state is exerted, Further, it is only necessary to have a sufficient area in which the fastening element 1 is pressed by the horizontal surface 12a of the opposite second belt holding portion 4 to maintain the meshing posture without being aliased. Now, it is assumed that the concealed zipper 21 when the fastening element 丨 is in the normal meshing state shown in FIG. 7, for example, an airbag device (not shown) is actuated and the airbag starts to expand and expand, and its strong inflation pressure acts on each fastening component. In the present embodiment, similarly to the above-described second and second embodiments, the fastening element i in the state of meshing 140702.doc 19 201029594 is instantaneously shifted to the engagement release state shown in FIG. That is, by the expansion pressure at which the airbag starts to expand, a strong tensile force acts on the separation direction of the left and right chain cloths 22, and the right and left fastening elements 丨 are respectively rotated in the pulling direction of the chain cloth 22. At this time, the chamfered portion 6b of the front end of the engaging head portion 6 which is originally in contact with the horizontal surface 12a of the second tape holding portion 4 can be unobstructed to rotate on the opposite engaging surface 12 as if As shown in Fig. 8, in the above description, the engagement portion of the fastening member i that is unsynchronized by the center portion of the 1 WC-shaped base portion 2 of the fastening element is smoothly slid in the direction in which the chain cloth 22 is pulled. Although the third to third embodiments are individually described, in the present invention, the embodiments may be combined as appropriate. For example, in the second embodiment, the second embodiment may be combined, or the inclined surface 12b may be formed on the second embodiment, and the chamfered portion 6b may be formed at the upper end portion of the engaging head. Further, although it is roughly illustrated, it is also possible to form an upper inclined surface instead of the chamfered portion. In this case, in order to secure the required contact area between the upper surface 13 of the engaging head portion 6 which is in surface contact with the horizontal surface 12a, the intermediate portion of the engaging surface 12 at the starting point of the upper inclined surface 12b is substantially slightly oriented toward the second portion. The tape end portion 4 may be displaced at the front end side. Further, for example, all of the features of the features of the third embodiment may be combined. The fastener element 1 including the above configuration is formed at a predetermined interval at each element mounting edge portion of the pair of key fabrics 22 to form the fastener zipper 23 shown in FIG. 9, as shown in FIG. In a state where the component mounting edge portion of the 22 is folded into a substantially 1} shape, the slider 24 is inserted into the component row of the fastening component 1 to obtain the hidden pull key 21 as shown in FIG. Here, FIG. 1 is a hidden view of the present embodiment of the hidden 140702.doc -20. 201029594. The hidden zipper 21 is a ten-sided view of the side of the tape, and FIG. 9 is the hidden zipper 21 viewed from the back side of the tape. The back view. The attachment of the fastening element 1 to the chain cloth 22 can be performed by using the conventionally used hand & 4 rows, such as by inserting the synthetic resin of the chain cloth 22 into the mounting edge portion of the key W2. A fastening member 1 made of a synthetic resin of a specific shape is attached to the chain cloth 22. In this case, as the synthetic resin of the material of the knot element, for example, polyacetal, polybutylene terephthalate, φ (dragon, etc.) can also be used by using a copper alloy, a nickel alloy, and a The die-casting component of the metal is set to the chain cloth 22. The hidden zipper 21 obtained by using the fastening component 1 is shown in Fig. 4, and the circular fastening of the fastening component 1 is utilized. The hole 14 holds the core cord portion 25 of the chain cloth 22, and the first tape holding portion 3 of the fastening element 1 and the second tape holding portion 4 sandwich the component mounting edge portion of the chain cloth 22. The key cloth 22 is folded into a substantially u-shaped shape at the front end of the first tape holding portion 3 to slide the slider 24 so that the fastening elements 1 attached to the left and right key cloths 22 are engaged with each other, whereby As shown in Fig. 4, the folded end faces 26 of the chain cloth 22 which are folded into a substantially U-shape are closely adhered to each other. Thereby, the engaging member 1 in which the hidden zipper 21 is invisible from the surface side of the chain cloth 22 can be omitted. The concealed pull key 21 is formed by the first tape holding portion 3 side rear end portion curved surface and the second tape holding portion 4 side rear end portion of the c-shaped base portion 2 of the fastening element 1 The first outer peripheral surface 18 and the second outer peripheral surface 19 of the curved surface form a cylindrical surface, respectively, so that when the slider 24 slides, interference between the fastening element 1 and the slider 24 can be suppressed, and good sliding characteristics can be obtained. Further, the following effects are obtained. For example, when the slider 24 is slid to engage the right and left fastening elements 1, 140702.doc • 21· 201029594 The tensile stress to the outside acts on the left and right chain cloths 22, such as As shown by the imaginary line of the figure, the fastening element i may enter in a posture inclined to the fastening element passage 27 of the slider 24. In this case, when the fastening element 1 passes through the fastening element passage 27 of the slider The second outer peripheral surface 19 of the fastening member! is in contact with the lower plate 29 of the slider 24, and the first outer peripheral surface 18 is in contact with the inverted portion of the slider 24 [the flange 30 of the shape and toward the rear side of the slider 24 In this case, the second outer peripheral surface 19 is brought into contact with the lower plate 29' of the slider 24 and the first outer peripheral surface 18 is brought into contact with the convex portion of the slider 24 by the shape of the inside of the fastening member passage 27 of the slider 24. The edge 3〇, and the fastening element 1 is rotated in the fastening element passage 27, the posture of the fastening element 1 can be dumped as shown in FIG. The solid line shown in Fig. 2 is suitable for the engagement posture. That is, the concealed pull key 21 according to the present embodiment, even in the fastening element [in the fastening element passage 27 which enters the slider 24 in a posture unsuitable for oblique engagement [ In this case, the right and left fastening elements 1 can be surely engaged in the fastening element passage 27 by tilting the posture of the fastening element 1, and an advantage of ensuring a stable meshing state can be obtained. Here, as described above, the second outer peripheral surface of the fastening member 1 has a radius of curvature larger than that of the i-th outer peripheral surface 18. That is, as described above, the fastening member 1 is rotated in the slider 24 to be poured into a suitable one. In the case of the meshing posture, the range in which the second outer peripheral surface 19 comes into contact with the slider becomes wider than the i-th outer peripheral surface 18. Therefore, since the second outer peripheral surface 19 has a curvature radius larger than that of the first outer peripheral surface 18, the swirling of the fastening member 1 in the fastening member passage 27 can be smoothly performed, so that the fastening member 1 can be effectively and stably Dumped. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is the first embodiment of the present invention! Figure 3 is a perspective view of the fastening element viewed from the front side; Figure 3 is a side view of the fastening element; Figure 3 is a perspective view of the fastening element viewed from the back side; A side view showing a part of a normal engagement state of the concealed pull key of the present invention in which the fastening element is not attached; FIG. 5 is a view showing a state in which the tape lateral tension acts on the hidden zipper of the present invention. 6 is a rear view showing a fastening element of a second embodiment of the present invention; and FIG. 7 is a partial cross-sectional view showing a general engagement state of the fastening element of the third embodiment of the present invention; Figure 8 is a partial cross-sectional view showing the engagement state of the fastening member when the tape is subjected to the transverse pulling force; Figure 9 is a rear view showing a portion of the hidden zipper of the present invention; Figure 10 is a view showing a portion of the hidden pull button FIG. 11 is a dynamic explanatory view showing a change in the posture of the fastening element when the fastening element is introduced into the fastening element passage of the zipper; FIG. 12 is a view showing a modification of the first embodiment as viewed from the back side. Part of Fig. 13 is a side elevational view showing a part of a fastening element of a modification of the third embodiment. [Description of main component symbols] 1 fastening component 2 C-shaped base 3 1st belt inflammation holding portion 140702.doc „ 201029594 4 2nd tape holding portion 5 engaging portion 6 engaging head 6a curved surface 7 neck 8 Shoulder 9 Reinforcement part 10 Tape side edge part setting groove 11 Cloth clamping surface 12 Engagement surface 12a Water level 12b Upper inclined surface 13 Conceited head upper surface 14 Round holding hole 15 First tape holding part Front end portion 16 Second tape holding portion Front end portion 18 First outer peripheral surface 19 Second outer peripheral surface 21 Concealed zipper 22 Chain cloth 23 Zipper tie 24 Slider 25 Core rope portion 26 Folded end face 140702.doc - 24- 201029594 27 Buckle Element Pathway 30 Flange Reference 140702.doc -25-