499554 A7 —__B7___ 五、發明說明（/ ) 本發明係關於一種用於導管(conduit)之插接裝置，且 尤指用於馬達載具(vehicle)中之流體的導管。 將系統各個不同構件彼此連接之流體導管係尤其提供 以連接於馬達載具中的空調系統，但是亦可提供於其他系 統。該種流體導管係必須一直保持爲防洩漏，尤其是應用 至其連接器。另一方面，於組裝期間，其應係可能以最簡 單可能的方式而作成介於導管以及與其連接的系統構件之 間的流體連接。在此所加諸之數個需求爲：關連於其必須 係安裝在一馬達載具的引擎室中之單元，諸如於此例中之 空調系統與其構件，對於各別連接點之接近通路係大爲受 限。通常，螺絲起子與類似工具係幾乎沒有任何通路至該 等連接點。供作成流體連接之其他特殊工具係亦幾乎無法 使用。此舉係造成其可能以最簡單方式使得連接過程爲可 靠之需求，且若爲可能係無須運用特殊工具。甚者，該種 連接技術係必須造成一可靠的過程而不考慮組裝者之個別 訓練。此乃意謂著錯誤組裝之可能性係應該大爲排除。 除了所需之簡單組裝與於延長時間期間之連接緊密度 以外，連接係應該儘可能爲成本有效，即使是在諸如溫度 變動、溼度與振動效應之不利的環境條件下。此舉係更應 爲如此，由於連接點係大量存在於流體導引系統之中。 一種用於流體導管之連接系統係已知於美國專利第 5,727,304號，其大程度符合所敘述之需求。該種系統係運 用以供連接一個流體導引管路之一端至一適當單元。針對 此目的，個別的管路係具有於一自由端上的一環形溝槽之 3 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I-------------^--------- (請先閱讀背面之注意事項再填寫本頁) 499554 A7 __ B7___ 五、發明說明（〆） 一〇形環，其密封置放於欲連接之單元之一開口的壁部。 一固持夾具係延伸於管端且係藉由螺栓所固定於單元上’ 固持夾具係運用以供管端之機械固定於開口中。螺栓係設 計爲一彈扣螺栓且延伸通過於針對此目的所提供之固持夾 具中的一開口。彈扣螺栓具有一錐形頭部，其係跟隨以一 扣入肩部。一彈扣環係延伸在螺栓環形肩部之後以構成一 彈扣元件，彈扣環係設於一環形構槽中之該固持夾具中的 一開口，環形構槽係徑向開口朝向內部。 若係意欲藉由此種連接技術以連接一管路至一單元， 設有0形環之管路末端係插入於開口，固持夾具之開口係 同時推壓於固持螺栓之錐形頭部而直到彈扣環係延伸超過 環形肩部且以此方式將固持夾具鎖定於螺栓上。 起因於此種已知導管連接裝置，本發明之目的係進一 步對其硏發，使得供作成連接所需的插入力量或致動力量 係可減小。 此目的係藉由根據申請專利範圍第1項之導管插接裝 置所達成。 其於置放在一起之狀態時可將二管路彼此連接之二個 連接元件係導管插接裝置之一部份。欲長時間維持此連接 ，係提供一固持配置，其係設計爲一鎖定配置。實施爲閉 合環路之一張力彈簧元件係使用作爲彈扣元件。當後者(張 力彈簧元件)係轉移至扣入位置時，其係首先導引於一扣入 突出部，其中，其在過程中係伸展於周緣方向。扣入突出 部係較佳設計爲旋轉對稱。當張力彈簧係置於扣入突出部 4 本紙張尺度適用中國國家標準(CNS)A4規格（210 X 297公爱) ~ ---I----^--------- (請先閱讀背面之注意事項再填寫本頁) 499554 A7 _____ B7 _ 五、發明說明（$ ) ，其係亦成爲一旋轉對稱之形狀。其當通過於扣入突出部 時係僅爲伸長，使得相等、朝內指向之徑向力量係發生於 其整個周緣。此平均力量分布之結果係在於，該彈扣元件 係可相當容易移動於扣入突出部。是以，供產生彈扣連接 之扣入力量係小的。因此，連接係可手動作成而無須針對 於此舉所需之特別大的力量。是以，在其爲難以到達之位 置與組裝者僅可施加小的手動力量之處，該種導管插接裝 置之運用係亦爲所需。甚者，錯誤組裝之危險係爲低的。 經驗所已經顯示出的是，當其係以小力量所作成之連接， 因爲不當用力之錯誤組裝的危險係最小化。 根據本發明之導管插接裝置係可運用於一馬達載具之 空調系統，例如凝結器連接、蒸發器連接、至壓縮器之連 接、或者至熱膨脹閥之連接。於此等實例之各者，其係必-須提供介於一裝置構件與一導管之間的連接，即，連接元 件之一者係配置或實施於個別的裝置構件上。再者，導管 插接裝置係亦可運用以供連接二個導管。甚者，舉例而言 ’導管通道係可藉由該種導管插接裝置所產生於馬達載具 之防火牆處。諸如低壓水力線路(返回線路）、燃料線路、 油料線路或水流線路之其他流體導管係亦可藉由根據本發 明之導管插接裝置所連接。 較佳而言，根據本發明之導管插接裝置係具有一開口 於其固持元件之一者，其中該張力彈簧元件係保持爲可徑 向移動但是實質爲不可軸向移動之方式。舉例而言，該開 口係一通道，一適當固定螺栓(第二連接元件)係伸出通過 5 本紙張尺度適用中國國家標準（CNS)A4規格（21G X 297公爱) 一 一 ---I ---I--I--- I 1 I I I I I ^ -------I I (請先閱讀背面之注意事項再填寫本頁) 499554 A7 ___B7 ___ 五、發明說明（！/> ) 該通道。欲係以可徑向移動但是實質爲不可軸向移動之方 式而設置，張力彈簧元件係包封於一適當袋部(Pocket)，舉 例而言，其係可由設於固持元件之開口壁部的一環形溝槽 所形成。張力彈簧元件與環形溝槽之直徑係彼此配合’使 得張力彈簧元件係具有徑向活動餘裕(play)以設置於環形溝 槽而不會落出該開口。 第二固持元件係由具有扣入外形之一伸長元件所實質 構成，第二固持元件係較佳具有一環狀扣入肩部之彈扣螺 栓。彈扣螺栓係可實施爲與關連於其之(第二）連接元件的 一件式者。然而，其係較佳爲與後者(第二連接元件)所旋 緊在一起。欲釋放用於導管之插接，螺栓係可由各別的連 接元件所移出’舉例而言’藉由此舉’例如針對維修目的 之導管插接裝置的分離係成爲可能。 於扣入位置，張力彈簧元件係較佳爲保持介於二個(例 如環形)接觸面之間’一個接觸面係第一固持元件之一部份 ，另一個接觸面係第二固持元件之一部份，該二個接觸面 構成開口朝向外部之一個銳角，特別是在其係與張力彈簧 元件成接觸之處。該等接觸面係定位使得其固持張力彈簧 元件於其伸展狀態。張力彈簧元件欲收縮之傾向係由該等 接觸面關於彼此之角度位置所轉換成爲一軸向張力，其推 壓該連接元件爲一起於扣入位置。介於1度與15度之間( 較佳爲5度)的銳角係已經顯示對於徑向方向之介於20度 至25度之該等接觸面的傾斜爲特別有用。當運用此等角度 時，其可易於作成但是無法由作用於連接元件之間的軸向 6 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) ^ --------^-------- (請先閱讀背面之注意事項再填寫本頁) 499554 A7 ___B7_____ 五、發明說明（f) 力量所釋放之特別可靠的扣入式連接係建立。以此方式， 張力彈簧元件係作用介於其方位爲朝向彼此之楔形者的該 等接觸面之間，並且建立該等連接元件的壓力於彼此。 張力彈簧元件係較佳爲設計成具有圓形截面之環 (torus)。於此例中，其係較佳爲由可撓材料所製成，可撓 材料之可撓曲性(彈性)係允許於其線中心軸之滾動。以此 方式，張力彈簧元件係可滾轉於指定至其之扣入突出部， 其將插入力量(即用以作成插接所需之力量)減小爲極低的 値。其否則將在此所注意到之摩擦力係防止。甚者，一明 確界定之扣入點係建立，其係由組裝者所注意，俾使其將 例如由其他扣入元件之欠缺完全扣入所引起的錯誤組裝係 防止。 作爲張力彈簧元件之環形閉合螺旋狀彈簧的使用係已 經顯示爲特別有用。螺旋狀彈簧係較佳爲由彈簧鋼所作成 且以小的致動力量而滑動或滾動於個別的扣入突出部。伸 展力量係可隨需要而由適當選取之彈簧係數與螺旋狀彈簧 元件線路厚度所設定。與其無關的是，環形螺旋狀彈簧係 關於其軸向方向（即連接元件之致動方向）而極爲堅硬，其 係有利於扣入式連接之可靠性。當關於其伸展方向(周緣方 向），其本身爲閉合之螺旋狀張力彈簧的個別繞組係配置成 列，意謂著其係關於軸向方向而爲平行配置。因爲此舉， 其係可能使得介於軸向方向的硬度與周緣方向的硬度(或可 伸展度)之間的比値爲極大，其係有利於扣入式連接之可靠 性。 7 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I --------1——---- (請先閱讀背面之注意事項再填寫本頁) 499554 A7 ^___B7 _ 五、發明說明（i ) 固持元件係可配置於鄰接連接元件之側。於此例中， 其係可能提供用於一對連接元件（一個流體導管）之複數個 固持元件，以及藉由一個固持元件而固持其作成介於數個 流體導管之間的連接之數個連接配置於彼此。 本發明之實施例的有利細節係由圖式、說明或者依附 申請專利範圍所接續。 [圖式簡單說明] 本發明之示範實施例係說明於圖式，其中： 第一圖係以方塊圖形式之一馬達載具的空調系統； 第二圖係以縱向截面表示其圖示於第一圖中的空調系 統之導管插接裝置； 第三圖係第二圖之導管插接裝置的立體截面圖； 第四圖係以截面表示且於另一比例之根據第二與三圖 的導管插接裝置之一部份的一扣入裝置； 第五圖係根據第二與三圖之導管插接裝置的分解圖； 第六圖係導管插接裝置之另一實施例的立體圖； 第七圖係根據第六圖之導管插接裝置的俯視圖； 第八圖係導管插接裝置之又一實施例的立體圖； 第九圖係導管插接裝置之再一實施例的立體圖； 第十圖係實施爲閉合環形彈簧之一張力彈簧截面的立 體圖；及 第十一圖係圖示於固持裝置之幾何條件，固持裝置係 導管插接裝置之一部份。 [元件符號說明] 8 &&尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ""' -------------------^--------- (請先閱讀背面之注意事項再填寫本頁) 499554 A7 B7 五、發明說明（ 1 導管插接裝置 2 空調系統 (請先閱讀背面之注意事項再填寫本頁) 3 壓縮器 4 凝結器 5 具有過濾乾燥器之流體貯存器 6 蒸發器 7、8、9、10線路(流體導管） 7a、7b 線路段 8a 流體導管 10a、10b 線路段 11 防火牆 12 通道元件(連接元件） 12a 連接元件 14 第一連接元件 15 連接開口 15a 流體導管 16 第二連接元件 17 第一圓柱狀段 18 爪肋(detent rib) 19 端環 20 錐狀插入斜坡 21 環形溝槽 23 0形環 24 線路導管 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 499554 A7 _ B7 五、發明說明（I") 25、25a 固持配置（holding arrangement) 26 第二固持元件 27 第一固持元件(連接元件） 28 底側 29 平坦表面 31 通道(開口） 32 環形溝槽 33 張力彈簧 33a、 33b 末端 34 側面(flank) 34a 內端 35 環形側面 36 溝槽底面(ground) 41 螺紋孔 42 延伸部 43 圓柱段 44 環狀前端面 45 扣入肩部 45a 徑向外端 46 插入錐狀部 47 六邊形凹部 作爲 一種導管插接裝置1(第二圖所示)之示範實施例， (請先閱讀背面之注意事項再填寫本頁) --------t-------— 一種用於馬達載具之空調系統2係顯示於第一圖，其中作 爲系統構件之構件係爲壓縮器3、凝結器4、具有過濾乾燥 10 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 499554 A7 _ _ B7___ 五、發明說明（1 ) 器之流體貯存器5、與蒸發器6。此等構件係藉著線路7、 8、9、10所彼此連接，其中該等線路7、8、9、10係界定 流體導管。蒸發器6係一般爲配置於馬達載具內部’而其 餘構件係配置於引擎室。該內部與引擎室係由一防火牆11 所彼此分離，線路7、1〇係導引通過防火牆11。線路7、 10係因而分爲線路段7a、7b、10a、10b。一通道元件12係 配置於防火牆11 ’通道兀件12係連接個別線路7、10的部 份7a、10a於引擎室之側而且連接線路7、1〇的部份7b、 10b於乘客(passenger)室之側。第二圖所示之導管連接裝置 1係可使用以供連接線路7、8、9、10至系統構件3、4、5 、6以及至連接元件12。 一第一連接元件14(母(female)連接元件)係導管連接裝 置1之一部份，第一連接元件14係設有一連接開口 15。 其構成對於欲連接之例如線路8的線路之一個流體導管 15a，線路8含有一個流體導管8a。線路8係連接一第二連 接元件16(公(male)連接元件），其係如同一管狀延伸件而欲 插入於連接開口 15。如可於第五圖所特別看出，連接元件 16具有一第一圓柱狀段17，其外徑係大約匹配於連接開口 15之內徑並且以微小活動餘裕而裝配於連接開口 15。連接 元件16之外徑係在其自由端爲減小，其中一或二個爪肋 18係設於其外部周緣。爪肋18係運用以供密封一個端環 19，俾使其無法落出且其構成連接元件16之連接器，例如 諸如具有一錐狀插入斜坡20之塑膠環。隨同在圓柱狀段 17之前端處的環面，塑膠環19界定一環形溝槽21(第二與 11 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） IIIIIIIII1 — - I I I I I I 1 ·ΙΙΙΙ — — —» (請先閱讀背面之注意事項再填寫本頁) 499554 A7 B7 五、發明說明（/p) (請先閱讀背面之注意事項再填寫本頁) 三圖），其中一個〇形環23係配置，或者二或多個0形環 23或其他密封元件係配置。〇形環23或其他密封元件係使 用以供線路導管24之外部密封，線路導管24係由二個連 接元件14、16所鄰接邊界且係由流體導管8a、15a所構成 ，連接元件14、16係彼此連接。 一固持配置25之一部份係第一固持元件27與第二固 持元件26，固持配置25係提供以保持連接元件14、16於 連接狀態，即，連接元件16插入於連接開口 15。如可於 第三圖所特別看出，第二固持元件26係可實施爲隨同個別 連接元件16之一件者。欲連接之線路8係已經由第三圖所 省略。連接元件16及/或固持元件26係可由任何適合方式 所連接，舉例而言，藉由黏接、焊接、壓接或類似者。若 可撓線路係爲所需，如第二圖所指出，係可能提供一種管 狀延伸件，其延伸離開固持元件26且係使用作爲用於可撓 線路機構之一座部。 固持元件26係與連接元件16爲固定式或可釋放式連 接，並具有一實質平坦的底側28，於組裝(置放一起)之狀 態，藉此底側28，其置靠於形成於連接元件14之一個對 應平坦表面29，或者(若需要時)係置於固持元件27。於此 例中，連接元件14係可爲一個單獨的連接元件，或者欲連 接構件之一部份。舉例而言，連接元件14係可設於凝結器 4、蒸發器6、壓縮器3或者連接元件12、以及具有過濾乾 燥器之流體貯存器5。 連接元件26具有一開口，於本示範實施例中，即一通 12 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱) 499554 A7 B7 五、發明說明（丨/) 道31(特別參看第五圖），其係可本質實施爲一圓柱孔。開 口 31之內壁係設有一環形溝槽32，其開口爲徑向朝內且 其可特別於第四圖所看出。環形溝槽32具有近似梯形之截 面且容納一環狀張力彈簧元件，於本示範實施例中係一張 力彈簧33，其二個末端33a、33b係彼此連接，俾使其構成 一閉合圓形。末端33a、33b係可插入於彼此。若必要時， 其係可藉由一雷射焊接點所彼此連接。再者，其係可藉由 一彈性體所彼此連接，彈性體係至少於末端33a、33b之區 域或者完整塡充其內部。 單獨顯示於第十圖中之張力彈簧33係繞製且尺寸爲使 得，其線圈35係以對於彼此之預應力而安置。此係一預應 力之彈簧元件，其特性曲線係可隨需求而適應改變。於弛 放之狀態，該張力彈簧係因此具有一外徑爲稍微大於開口 1 31之內徑。因此，即使是固持元件27並未延伸通過開口 31，該張力彈簧係保持在環形溝槽32之內側而無成爲失去 之可能性且無法落出該開口 31。 另一方面，張力彈簧33具有長度爲使得於自由驰放狀 態中係以稍微大於其線圈直徑一半者而伸出至開口 31。以 此方式，其可構成用於固持元件27之一爪元件，其設計係 將另外討論之。 環形溝槽32係構成用以容納張力彈簧31之一袋部， 其中，面對平坦表面28之側面34係構成一錐狀環形表面 ，即位於一錐狀部之外殼上的一者。其係構成由第四圖所 示軸向方向A之較佳爲70度的一角度，即其係配置在關 13 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) - I I I 1 I--^ · I------- 499554 A7 ____B7 _ 五、發明說明（丨L) 於徑向方向之大約20度的一角度。但是位在相對於其之環 形溝槽32的環形側面35係可實施爲一平坦表面，其中此 表面之傾斜度係爲次要。溝槽底面36(即環形溝槽32的外 徑)係配置或者尺寸爲使得張力彈簧元件33若需要時可完 全按壓至環形溝槽32,即當其爲適當伸展時係消失在開口 31之壁面後。 連接元件27係實施爲一彈扣螺栓，其由平坦表面29 所朝上伸出。若必要時，彈扣螺栓27係可與連接元件14 爲連接成一件式。然而，較佳且於本示範實施例中，其係 與連接元件14爲可釋放式連接。一螺紋孔41係使用供此 目的，螺紋孔41係配置成與連接開口 15爲平行且由其所 隔開。在此係定位使得當連接元件16爲推壓至連接開口 15，螺栓27係無絆住情形而可進入開口 31。 連接元件27具有備有螺紋之一延伸段42，其係跟隨 以例如爲圓柱形之一段43。當使用作爲連接元件之螺栓27 係已經旋入螺紋孔41，鄰接螺紋延伸段42之其環狀前端 面44係固定位在平坦表面29。以此方式，前端面44係固 定一扣入肩部45之位置，扣入肩部45係鄰接該圓柱段43 且係較佳實施爲具有大開口角度之一錐形表面。其較佳形 成以徑向方向之大約25度的一角度。其最大直徑係僅稍小 於孔31之內徑。其最窄直徑係在至圓柱段43之過渡處所 待測量，圓柱段43之外徑係小於完全鬆弛的張力彈簧33 之內徑。此舉係亦以象徵意味所應用，即使該段43係並非 成形爲圓柱形，例如爲稜鏡形(角柱形）。無論如何，於扣 14 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · I I I I I I I ^ ·11111!1. 499554 A7 B7499554 A7 —__ B7___ 5. Description of the Invention (/) The present invention relates to a plug device for a conduit, and in particular a conduit for a fluid in a motor vehicle. A fluid conduit system connecting the various components of the system to each other is particularly provided for connection to an air-conditioning system in a motor vehicle, but may also be provided to other systems. This fluid conduit must always be leak-proof, especially when applied to its connector. On the other hand, during assembly, it should be possible to make the fluid connection between the conduit and the system components connected to it in the simplest possible way. Several requirements are added here: the units connected to them must be installed in the engine room of a motor vehicle, such as the air-conditioning system and its components in this example, and the access paths to the respective connection points are large. Is restricted. Generally, screwdrivers and similar tools have little access to these connection points. Other special tools for making fluid connections are also almost unusable. This makes it possible to make the connection process reliable in the simplest way, and if it is possible, no special tools are required. Furthermore, the connection technique must result in a reliable process without regard to the individual training of the assembler. This means that the possibility of incorrect assembly should be largely ruled out. In addition to the simple assembly required and the tightness of the connection over an extended period of time, the connection system should be as cost effective as possible, even under adverse environmental conditions such as temperature fluctuations, humidity and vibration effects. This is even more so, as connection points exist in a large number in fluid guidance systems. One connection system for fluid conduits is known from U.S. Patent No. 5,727,304, which largely meets the needs described. This system is used to connect one end of a fluid guide line to a suitable unit. For this purpose, individual pipelines have 3 circular grooves on a free end. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) I -------- ----- ^ --------- (Please read the precautions on the back before filling out this page) 499554 A7 __ B7___ V. Description of the invention (〆) 10-ring, which is placed in a sealed position One of the connected units has an open wall. A holding jig is extended at the end of the pipe and is fixed to the unit by a bolt 'The holding jig is used for mechanically fixing the end of the pipe in the opening. The bolt is designed as a snap bolt and extends through an opening in a holding fixture provided for this purpose. The snap bolt has a tapered head, which is followed by a snap-in shoulder. A snap ring system extends behind the annular shoulder of the bolt to form a snap element. The snap ring system is an opening in the holding jig provided in an annular structure groove, and the annular structure groove has a radial opening facing inward. If it is intended to connect a pipeline to a unit by this connection technology, the end of the pipeline provided with an O-ring is inserted into the opening, and the opening of the holding fixture is simultaneously pressed against the tapered head of the holding bolt until The snap ring system extends beyond the annular shoulder and in this way locks the holding fixture to the bolt. As a result of this known catheter connection device, the object of the present invention is to burst it further so that the insertion force or actuation force required for making the connection can be reduced. This object is achieved by a catheter insertion device according to item 1 of the scope of patent application. When it is put together, the two connecting elements that can connect the two pipes to each other are part of the catheter insertion device. To maintain this connection for a long time, a fixed configuration is provided, which is designed as a locked configuration. A tension spring element implemented as a closed loop is used as a snap element. When the latter (tensile spring element) is transferred to the snap-in position, it is first guided to a snap-in protrusion, wherein it is stretched in the peripheral direction during the process. The snap-in protrusion is preferably designed to be rotationally symmetric. When the tension spring is placed in the buckling protrusion 4 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 public love) ~ --- I ---- ^ --------- ( (Please read the notes on the back before filling out this page) 499554 A7 _____ B7 _ 5. Description of the invention ($), it also becomes a rotationally symmetric shape. It only stretches when it is snapped into the protrusion, so that equal, inwardly directed radial forces occur over its entire periphery. The result of this average force distribution is that the snap element can be moved relatively easily to the snap-in projection. Therefore, the snap-in force for generating the snap connection is small. Therefore, the connection can be made manually without having to deal with the extraordinarily large forces required for this. Therefore, where it is difficult to reach and the assembler can only apply a small manual force, the use of this catheter insertion device is also required. Furthermore, the risk of incorrect assembly is low. What experience has shown is that when it is made with small forces, the risk of incorrect assembly due to improper force is minimized. The pipe connector device according to the present invention is applicable to an air conditioning system of a motor vehicle, such as a condenser connection, an evaporator connection, a connection to a compressor, or a connection to a thermal expansion valve. In each of these examples, it is necessary to provide a connection between a device component and a conduit, that is, one of the connection components is configured or implemented on an individual device component. Furthermore, the catheter insertion device can also be used for connecting two catheters. Furthermore, for example, the 'catheter channel can be generated at the firewall of the motor vehicle by the catheter insertion device. Other fluid conduits, such as low-pressure hydraulic lines (return lines), fuel lines, oil lines, or water flow lines, can also be connected by a conduit plug-in device according to the present invention. Preferably, the catheter insertion device according to the present invention has an opening in one of its holding elements, wherein the tension spring element is maintained in a manner that can be moved radially but not substantially axially. For example, the opening is a passageway, and a suitable fixing bolt (second connection element) is extended through 5 paper standards to apply Chinese National Standard (CNS) A4 specifications (21G X 297 public love). --- I--I --- I 1 IIIII ^ ------- II (Please read the notes on the back before filling out this page) 499554 A7 ___B7 ___ 5. Description of the invention (! / ≫) This aisle. To be arranged in a manner that can be moved radially but not substantially axially, the tension spring element is enclosed in a suitable pocket, for example, it can be provided by the opening wall of the holding element. An annular groove is formed. The diameters of the tension spring element and the annular groove are matched with each other 'so that the tension spring element has a radial play to be disposed in the annular groove without falling out of the opening. The second holding element is substantially composed of an elongated element having a snap-in shape, and the second holding element preferably has a ring-shaped snap-in bolt that snaps into the shoulder. The snap bolt may be implemented as a one-piece with a (second) connecting element associated therewith. However, it is preferably screwed together with the latter (second connecting element). To release the plug for the catheter, the bolts can be removed by the respective connecting elements 'for example' by this means it becomes possible, for example, for the disconnection of a catheter connector for maintenance purposes. In the snap-in position, the tension spring element is preferably held between two (eg, annular) contact surfaces. 'One contact surface is part of the first holding element, and the other contact surface is one of the second holding element. In part, the two contact surfaces constitute an acute angle with the opening facing outward, especially where it is in contact with the tension spring element. The contact surfaces are positioned such that they hold the tension spring element in its extended state. The tendency of the tension spring elements to contract is converted from the angular position of the contact surfaces with respect to each other into an axial tension, which pushes the connection element together in the snap-in position. Acute angles between 1 and 15 degrees (preferably 5 degrees) have been shown to be particularly useful for tilting such contact surfaces in the radial direction between 20 and 25 degrees. When using these angles, it can be easily made but cannot be made by the axial direction acting on the connecting elements. 6 The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ^ ------ -^ -------- (Please read the notes on the back before filling this page) 499554 A7 ___B7_____ V. Description of the invention (f) The establishment of a particularly reliable snap-in connection system released by the force. In this way, the tension spring elements act between these contact surfaces whose wedges are oriented towards each other and establish the pressure of the connecting elements on each other. The tension spring element is preferably a torus designed with a circular cross section. In this example, it is preferably made of a flexible material, and the flexibility (elasticity) of the flexible material is allowed to roll on its central axis. In this way, the tension spring element can be rolled to the snap-in projection assigned to it, which reduces the insertion force (that is, the force required to make the plug) to an extremely low 値. The frictional forces which would otherwise be noted here are prevented. Furthermore, a clearly defined deduction point is established, which is noticed by the assembler so that it will prevent erroneous assembly caused by, for example, the complete deduction of the lack of other deduction elements. The use of an annular closed coil spring as a tension spring element has been shown to be particularly useful. The helical spring is preferably made of spring steel and slides or rolls on individual snap-in projections with a small actuating force. The extension force can be set as required by a properly selected spring coefficient and helical spring element circuit thickness. It has nothing to do with the fact that the toroidal coil spring is extremely hard with respect to its axial direction (ie the direction of actuation of the connecting element), which is conducive to the reliability of the snap-in connection. When it comes to the direction of extension (peripheral direction), the individual windings of the closed spiral tension spring itself are arranged in a row, which means that they are arranged in parallel with respect to the axial direction. Because of this, it is possible to make the ratio 介于 between the hardness in the axial direction and the hardness (or extensibility) in the peripheral direction extremely large, which is conducive to the reliability of the snap-in connection. 7 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) I -------- 1 -------- (Please read the precautions on the back before filling this page) 499554 A7 ^ ___ B7 _ 5. Description of the invention (i) The holding element can be arranged on the side adjacent to the connecting element. In this example, it is possible to provide a plurality of retaining elements for a pair of connection elements (a fluid conduit), and a plurality of connections that are held by one retaining element to make a connection between the plurality of fluid conduits Placed on each other. Advantageous details of the embodiments of the present invention are continued from the scope of the drawings, descriptions or patent applications. [Brief Description of the Drawings] An exemplary embodiment of the present invention is illustrated in the drawings, wherein: the first drawing is an air-conditioning system of a motor vehicle in the form of a block diagram; The diagram shows the duct inserting device of the air conditioning system in the first figure; the third diagram is a perspective sectional view of the duct inserting device in the second diagram; the fourth diagram is the duct according to the second and third diagrams shown in cross section and at another scale A snap-in device as part of the plug-in device; the fifth figure is an exploded view of the catheter plug-in device according to the second and third figures; the sixth figure is a perspective view of another embodiment of the catheter plug-in device; Figure 8 is a plan view of the catheter insertion device according to the sixth figure; Figure 8 is a perspective view of another embodiment of the catheter insertion device; Figure 9 is a perspective view of another embodiment of the catheter insertion device; A perspective view of a cross section of a tension spring implemented as a closed ring spring; and the eleventh figure is a diagram showing the geometric condition of the holding device, which is a part of the catheter insertion device. [Explanation of component symbols] 8 & & dimensions apply Chinese National Standard (CNS) A4 specification (210 X 297 mm) " " '------------------ -^ --------- (Please read the precautions on the back before filling out this page) 499554 A7 B7 V. Description of the invention (1 Conduit plugging device 2 Air conditioning system (Please read the precautions on the back before filling out (This page) 3 Compressor 4 Condenser 5 Fluid reservoir with filter dryer 6 Evaporator 7, 8, 9, 10 lines (fluid conduit) 7a, 7b Line section 8a Fluid conduit 10a, 10b Line section 11 Firewall 12 channel Element (connecting element) 12a connecting element 14 first connecting element 15 connecting opening 15a fluid conduit 16 second connecting element 17 first cylindrical section 18 detent rib 19 end ring 20 tapered insertion slope 21 annular groove 23 0-ring 24 Line conduit This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 499554 A7 _ B7 V. I " 25, 25a Holding arrangement 26 Second holding Element 27 First holding element (connecting element) 28 Underside 29 Flat surface 31 channel (opening) 32 annular groove 33 tension springs 33a, 33b end 34 side (flank) 34a inner end 35 annular side 36 groove bottom (ground) 41 threaded hole 42 extension 43 cylindrical section 44 annular front surface 45 buckle Shoulder 45a, radial outer end 46, tapered 47, hexagonal recess as an exemplary embodiment of catheter insertion device 1 (shown in the second figure), (please read the precautions on the back before filling this page) -------- t --------- An air-conditioning system 2 for a motor vehicle is shown in the first figure, in which the components as system components are a compressor 3, a condenser 4, With filtration and drying 10 paper standards applicable to Chinese National Standard (CNS) A4 specifications (210 X 297 mm) 499554 A7 _ _ B7___ V. Description of the invention (1) Fluid reservoir 5 and evaporator 6. These components They are connected to each other by lines 7, 8, 9, 10, where the lines 7, 8, 9, 10 define fluid ducts. The evaporator 6 is generally arranged inside the motor vehicle and the remaining components are arranged in Engine room. The interior and engine room are connected to each other by a firewall 11 Separately, lines 7 and 10 are guided through the firewall 11. Lines 7 and 10 are thus divided into line segments 7a, 7b, 10a, and 10b. A passage element 12 is arranged on the firewall 11 'The passage element 12 is connected to the parts 7a, 10a of the individual lines 7, 10 on the side of the engine room and to the parts 7b, 10b of the lines 7, 10 to the passenger Room side. The conduit connection device 1 shown in the second figure can be used for connecting the wires 7, 8, 9, 10 to the system components 3, 4, 5, 6 and to the connecting element 12. A first connection element 14 (female connection element) is a part of the catheter connection device 1, and the first connection element 14 is provided with a connection opening 15. It constitutes a fluid conduit 15a for a line to be connected, such as line 8, which contains a fluid conduit 8a. The line 8 is connected to a second connection element 16 (male connection element), which is to be inserted into the connection opening 15 like the same tubular extension. As can be seen particularly in the fifth figure, the connecting element 16 has a first cylindrical section 17 whose outer diameter approximately matches the inner diameter of the connecting opening 15 and is assembled to the connecting opening 15 with a slight margin of movement. The outer diameter of the connecting element 16 is reduced at its free end, and one or two claw ribs 18 are provided at its outer periphery. The claw ribs 18 are used to seal an end ring 19 so that it cannot fall out and it constitutes a connector of the connecting element 16, such as a plastic ring having a tapered insertion ramp 20. Along with the torus at the front end of the cylindrical section 17, the plastic ring 19 defines an annular groove 21 (the second and the 11 paper sizes are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) IIIIIIIII1--IIIIII 1 · ΙΙΙΙ — — — »(Please read the precautions on the back before filling out this page) 499554 A7 B7 V. Description of the invention (/ p) (Please read the precautions on the back before filling out this page) Three pictures), one of them The O-ring 23 is configured, or two or more O-rings 23 or other sealing elements are configured. The O-ring 23 or other sealing element is used for the external sealing of the line conduit 24. The line conduit 24 is bordered by two connection elements 14, 16 and is constituted by the fluid conduits 8a, 15a. The connection elements 14, 16 Departments are connected to each other. A part of a holding arrangement 25 is a first holding element 27 and a second holding element 26. The holding arrangement 25 is provided to keep the connection elements 14, 16 in a connected state, that is, the connection element 16 is inserted into the connection opening 15. As can be particularly seen in the third figure, the second holding member 26 can be implemented as one of the individual connecting members 16. The line 8 to be connected has been omitted from the third figure. The connecting element 16 and / or the holding element 26 may be connected by any suitable means, for example, by gluing, welding, crimping or the like. If a flexible circuit is desired, as indicated in the second figure, it is possible to provide a tubular extension which extends away from the retaining element 26 and is used as a seat for a flexible circuit mechanism. The holding element 26 is connected to the connection element 16 in a fixed or releasable manner, and has a substantially flat bottom side 28 in an assembled (placed together) state, whereby the bottom side 28 is placed against the connection One of the elements 14 corresponds to a flat surface 29 or (if required) is placed on a holding element 27. In this example, the connecting element 14 may be a separate connecting element, or a part of a member to be connected. For example, the connection element 14 may be provided in the condenser 4, the evaporator 6, the compressor 3, or the connection element 12, and the fluid reservoir 5 having a filter dryer. The connecting element 26 has an opening. In this exemplary embodiment, one pass 12 paper sizes are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) 499554 A7 B7 V. Description of the invention (丨 /) Road 31 ( See in particular Figure 5), which can be implemented essentially as a cylindrical hole. The inner wall of the opening 31 is provided with an annular groove 32, the opening of which is radially inward and can be seen particularly in the fourth figure. The annular groove 32 has an approximately trapezoidal cross section and accommodates an annular tension spring element. In this exemplary embodiment, a tension spring 33 is connected, and two ends 33a, 33b are connected to each other so as to form a closed circle. The ends 33a, 33b can be inserted into each other. If necessary, they can be connected to each other by a laser welding point. Furthermore, they can be connected to each other by an elastic body, and the elastic system is at least in the region of the ends 33a, 33b or fully infills the interior. The tension springs 33 shown separately in the tenth figure are wound and dimensioned so that their coils 35 are arranged with pre-stress to each other. This is a pre-stressed spring element whose characteristic curve can be adapted and changed as required. In the relaxed state, the tension spring system therefore has an inner diameter slightly larger than the opening 1 31. Therefore, even if the holding member 27 does not extend through the opening 31, the tension spring is held inside the annular groove 32 without the possibility of being lost and cannot fall out of the opening 31. On the other hand, the tension spring 33 has a length so as to protrude to the opening 31 with a length slightly larger than half of its coil diameter in the free-running state. In this way, it can constitute a claw member for the holding member 27, the design of which will be discussed separately. The annular groove 32 constitutes a pocket portion for accommodating the tension spring 31, and the side 34 facing the flat surface 28 constitutes a conical annular surface, that is, one located on the outer shell of the conical portion. It constitutes an angle of preferably 70 degrees from the axial direction A shown in the fourth figure, that is, it is arranged at Guan 13 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ( Please read the precautions on the back before filling this page)-III 1 I-^ · I ------- 499554 A7 ____B7 _ V. Description of the invention (丨 L) angle. However, the annular side surface 35 located relative to the annular groove 32 may be implemented as a flat surface, and the inclination of this surface is secondary. The groove bottom surface 36 (that is, the outer diameter of the annular groove 32) is configured or dimensioned so that the tension spring element 33 can be fully pressed to the annular groove 32 if necessary, that is, it disappears on the wall surface of the opening 31 when it is properly extended. Rear. The connecting element 27 is implemented as a snap bolt which projects upwards from the flat surface 29. If necessary, the snap bolt 27 can be connected to the connecting element 14 in one piece. However, it is preferable and in this exemplary embodiment, it is a releasable connection with the connecting element 14. A threaded hole 41 is used for this purpose, and the threaded hole 41 is arranged parallel to and separated by the connection opening 15. The positioning here is such that when the connecting element 16 is pushed to the connecting opening 15, the bolt 27 can enter the opening 31 without tripping. The connecting element 27 has an extension 42 provided with a thread which follows, for example, a section 43 which is cylindrical. When the bolt 27 used as the connecting element is screwed into the threaded hole 41, the annular front end surface 44 adjacent to the thread extension 42 is fixed on the flat surface 29. In this way, the front end surface 44 fixes a position of the snap-in shoulder 45, and the snap-in shoulder 45 is adjacent to the cylindrical section 43 and is preferably implemented as a tapered surface having a large opening angle. It is preferably formed at an angle of about 25 degrees in the radial direction. Its maximum diameter is only slightly smaller than the inside diameter of the hole 31. The narrowest diameter is measured at the transition to the cylindrical section 43. The outer diameter of the cylindrical section 43 is smaller than the internal diameter of the fully relaxed tension spring 33. This is also applied symbolically, even if the section 43 is not shaped into a cylindrical shape, such as a cymbal (corner column). In any case, the size of this paper is applicable to China National Standard (CNS) A4 (210 X 297 mm) (please read the precautions on the back before filling this page) · I I I I I I I ^ · 11111! 1. 499554 A7 B7
五、發明說明（I 入狀態時’此段43並未碰觸張力彈簧33。 一插入錐狀部46係鄰接該扣入肩部45，且起始於扣 入肩部45之最大直徑而朝向螺栓27之自由端所逐漸縮小 。於本示範實施例中，相對於軸向方向A之插入錐狀部46 的外殼傾斜度係大約爲8度。不同角度係根據於供達成扣 入連接之致動力量所作出的請求而均爲可能。插入錐狀部 46之長度尺寸係使得於自由端所達到之一直徑爲小於全然 鬆驰的張力彈簧33之內徑。以此方式，插入錐狀部46係 可靠尋得進入由張力彈簧33所包圍的開口內之其路徑。其 直徑爲於朝著扣入肩部的方向而增大之其他旋轉對稱形狀 者係亦可運用以取代錐形者。 螺栓27係設有一致動裝置(例如一六邊形凹部47或於 外部之六邊形者或以圓環面)於其自由端，藉以當必要時係 能夠將螺栓27由連接元件14所釋放。 截至目前所述之導管插接裝置1係作用如後。 初始假設爲尙未達成任何組裝，即連接元件16尙未插 入於連接元件14。因此，〇形環23(或多個〇形環)係鬆弛 置放於其個別的溝槽21。張力彈簧33係亦爲全然鬆驰， 即其具有其最小的內徑。然而，其外徑係至少爲稍大於開 口 31之內徑，俾使其固定置於其環形溝槽32，如第五圖 所示。 若連接元件16係正插入至連接開口 15以供作成連接 ，固持元件26係同時以其開口 31所推壓於螺栓27之錐形 頭部。因爲此舉，環狀張力彈簧33成爲接觸該插入錐部 15 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · I I I I I I I ^--— 11 — — — 藤丨 499554 A7 _____B7______ 五、發明說明（丨I) 46且係由其所加寬。於過程中’張力彈簧33係迴轉或滾 轉於第十圖所示之其線軸S。以此方式，甚至是其爲強勁 並產生相當大的徑向朝內方向力量（即難以伸展者）之張力 彈簧33係以小阻力滾動於插入錐部46。針對於此舉所需 要的軸向致動力量係小的’俾使介於斜面35與張力彈簧 33之間的滑動摩擦力係保持爲低。 在連接元件16已經完全推壓至連接開口 15之前不久 ，即在固持元件26之平坦表面28到達平坦表面29並且成 爲停置於其之前不久，張力彈簧33已經到達扣入肩部45 。換言之，且如可於第十一圖所特別看出，扣入肩部45已 經定位使得介於扣入肩部45的徑向外端45&之間的距離( 距離A1)係大於張力彈簧33之直徑D(第十圖），而側面34 的最小直徑（內端34a)相距相對扣入肩部之距離(於第十一 圖之距離A2)係小於張力彈簧33之直徑D。如第十一圖所 進而顯示出，相對徑向方向之所涉及表面34、45的傾斜位 置係允許其爲圓形截面的張力彈簧33之扣入，不會有表面 45、34於軸向方向之重疊情形。 一旦張力彈簧33成爲留在扣入肩部45之後，其立即 彈扣於第十一圖所示之空間(距離A1)且在該處收縮。以此 方式，其係擠進介於側面34與扣入肩部45之間的間隙’ 且因爲此舉，其係以大力量拉出抵於連接元件14之固持元 件26。藉由此舉，一種扣入連接係產生，其無法由軸向拉 曳所破壞。其係僅可藉著螺栓27之移除所再次打開。否者 ，係得到一種耐久之連接。尤其是，一大的扣入力量係以 16 本^張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐) ——I--------翻裝—— (請先閱讀背面之注意事項再填寫本頁) 訂： 499554 A7 _______B7___ 五、發明說明（丨^) 小的致動力量(插入力量)所獲得。固持配置25之一就座情 形(seating)(無軸向活動餘裕)係藉由張力彈賛33之強拉曳( 伸張)效應所達成，張力彈簧33係擠進介於傾斜表面45、 34之間。 上述示範實施例係關於藉由單一固持裝置之單一導管 流體連接以及其固定。如可於第六與七圖所看出，尤其是 受到高壓所施應的流體導管係亦可由二個固持配置25、 25a所固定。固持配置25、25a二者係設計以匹配且對應於 根據上述示範實施例之固持配置25。如第七圖所示，其係 可關於線路8而爲直徑方向相對於彼此所配置。固持元件 26係接著關於力量而實施爲對應幾何及對稱。再者，其係 能夠承受扭轉應力。此等力量係保持爲遠離0形環23。尤 其是，其係並非徑向施壓，此有利於其密封能力。此舉係 以二或多個固持配置25而應用至所有實施例(第七與八圖) 〇 因爲個別的固持配置25、25a之張力彈簧元件33允許 某徑向活動餘裕，於一共同的固持元件26之數個同等實施 固持配置25、25a的配置係成爲可能。介於連接元件14、 16之間的同軸位置與方位係僅由〇形環23而並未由固持 配置25、25a所決定。此舉係亦應用至其他實施例。因爲 此〇形環23係未受到來自固持配置25或25a之另外的徑 向應力，因此係可提供最佳之密封。〇形環係決定徑向位 置並且造成同軸方位。因此’ 〇形環係根據規格而提供其 本身之內建位置。固持配置係適應改變其本身。 17 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝 一5J· 499554 A7 B7 五、發明說明（l t7) 導管插接裝置之另一實施例係說明於第八圖。舉例而 言，其係可使用作爲根據第一圖之一通道或者連接元件12 ，以供連接線路7a、10a並由二側接近防火牆11，個別的 線路末端係於另一側上。此種導管插接裝置之結構係大部 份對應於根據第六圖者，其中.，連接元件16具有二個線路 連接7a、10a。連接元件14係對應設有二個連接開口，其 係同軸於線路7、10。 儘管於根據第七圖之示範實施例中的二個固持配置25 、25a係提供用於固持元件26，該連接係亦可藉由單一個 固持配置25所固定，如可於第九圖所看出。第九圖所示之 連接元件12a具有一連接元件14，其具有一連接螺栓27與 二個連接開口，其係爲直徑方向相對於彼此所配置且係並 未進而顯示。固持元件26具有用於線路7、10二者之連接 器，線路7、10係於固持元件26之上的適當位置。固持配 置25係配置在用於線路7、10的二個連接器之間的中心’ 俾使造成對稱力量狀態。 導管插接裝置1具有用於特別簡單且確實組裝之一個 流體密封式(fluid-tight)插接器與一個扣入裝置25，當其固 定元件爲軸向連接時係具有極爲容易的作用且當通過超過 一扣入點時係不可釋放地扣入。一張力彈簧係使用作爲扣 入元件，張力彈簧係設計爲一環且係本身使用作爲一阻止 構件。此係尤其可確保低的致動力，且使得軸向活動餘裕 爲最小。 18 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) •'ϊργ rV. Description of the invention (In the I state, this paragraph 43 does not touch the tension spring 33. An insertion cone 46 is adjacent to the buckling shoulder 45 and starts from the largest diameter of the buckling shoulder 45 and faces The free end of the bolt 27 is gradually reduced. In the present exemplary embodiment, the inclination of the housing with respect to the axial direction A of the insertion cone 46 is approximately 8 degrees. Different angles are based on the fact that a snap-in connection is achieved. Any request made by the amount of power is possible. The length dimension of the insertion cone 46 is such that the diameter reached at the free end is smaller than the inside diameter of the tension spring 33 which is fully relaxed. In this way, the insertion of the cone The 46 series reliably finds its path into the opening surrounded by the tension spring 33. Other rotationally symmetric shapes whose diameter increases toward the direction of buckling into the shoulder can also be used instead of the tapered one. The bolt 27 is provided with a uniform movement device (such as a hexagonal recess 47 or an external hexagon or a torus) at its free end, so that the bolt 27 can be released by the connecting element 14 when necessary. . The catheter inserting device described so far The function of series 1 is as follows. The initial assumption is that 尙 has not reached any assembly, that is, the connecting element 16 is not inserted into the connecting element 14. Therefore, the O-ring 23 (or multiple O-rings) is loosely placed in its individual groove. Slot 21. The tension spring 33 is also completely relaxed, that is, it has its smallest inner diameter. However, its outer diameter is at least slightly larger than the inner diameter of the opening 31, and it is fixed in its annular groove 32, As shown in Figure 5. If the connecting element 16 is being inserted into the connecting opening 15 for connection, the retaining element 26 is simultaneously pressed against the tapered head of the bolt 27 by its opening 31. Because of this, the ring The tension spring 33 becomes 15 contacting the insertion cone 15 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) · IIIIIII ^ --— 11 — — — Rattan 丨 499554 A7 _____B7______ 5. The description of the invention (丨 I) 46 is widened by it. In the process, the tension spring 33 is rotated or rolled on its spool S as shown in the tenth figure. In this way , Even if it is strong and produces considerable radial The tension spring 33 with inward force (that is, the person who is difficult to extend) rolls with small resistance on the insertion cone 46. The axial actuating force required for this action is small, so that it lies between the inclined surface 35 and the tension spring The sliding friction force between 33 is kept low. Shortly before the connecting element 16 has been fully pushed against the connecting opening 15, that is, shortly before the flat surface 28 of the holding element 26 reaches the flat surface 29 and becomes parked thereon, The spring 33 has reached the snap-in shoulder 45. In other words, and as can be seen particularly in the eleventh figure, the snap-in shoulder 45 has been positioned so as to be between the radially outer end 45 & The distance (distance A1) is greater than the diameter D (tenth figure) of the tension spring 33, and the minimum diameter (inner end 34a) of the side 34 is relatively smaller than the distance that is buckled into the shoulder (distance A2 in the eleventh figure) is less than The diameter D of the tension spring 33. As shown in the eleventh figure, the inclined position of the surfaces 34 and 45 relative to the radial direction allows the tension spring 33 with a circular cross-section to be snapped in, without the surfaces 45 and 34 in the axial direction. Overlapping situation. Once the tension spring 33 has remained in the shoulder 45, it immediately snaps into the space (distance A1) shown in Fig. 11 and contracts there. In this way, it is squeezed into the gap 'between the side 34 and the snap-in shoulder 45, and because of this, it is pulled out of the holding member 26 against the connection member 14 with great force. By doing so, a snap-in connection is created, which cannot be broken by axial pulling. It can only be opened again by removing the bolt 27. Otherwise, you get a durable connection. In particular, a large amount of deduction force is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) in 16 books. ——I -------- Refitting—— (please first Read the notes on the back and fill in this page) Order: 499554 A7 _______B7___ V. Description of the invention (丨 ^) Obtained by small actuation force (insertion force). One of the holding configurations 25 (seating) (without room for axial movement) is achieved by the strong pulling (stretching) effect of the tension spring 33, and the tension spring 33 is squeezed between the inclined surfaces 45, 34 between. The above exemplary embodiment relates to a single conduit fluid connection and its fixation by a single holding device. As can be seen in the sixth and seventh figures, the fluid conduit system, which is especially subjected to high pressure, can also be fixed by two holding arrangements 25, 25a. Both the holding configurations 25, 25a are designed to match and correspond to the holding configuration 25 according to the above-described exemplary embodiment. As shown in the seventh figure, the lines 8 may be arranged with respect to each other in the diametric direction. The holding element 26 is then implemented to correspond to geometry and symmetry with respect to force. Furthermore, it can withstand torsional stress. These forces are kept away from the O-ring 23. In particular, it is not a radial pressure, which is beneficial to its sealing ability. This is applied to all embodiments with two or more holding configurations 25 (Figures 7 and 8). Because the tension spring elements 33 of the individual holding configurations 25, 25a allow a certain radial movement margin, a common holding It is possible to arrange a plurality of elements 26 in the same manner as the holding arrangements 25 and 25a. The coaxial position and orientation between the connecting elements 14, 16 is determined only by the O-ring 23 and not by the holding arrangements 25, 25a. This is also applied to other embodiments. Because the O-ring 23 is not subjected to additional radial stress from the holding arrangement 25 or 25a, it provides the best seal. The O-ring system determines the radial position and creates a coaxial orientation. Therefore, the O-ring is provided with its own built-in position according to the specifications. The holding configuration is adapted to change itself. 17 This paper size applies to China National Standard (CNS) A4 (210 x 297 mm) (Please read the precautions on the back before filling out this page)-Install a 5J · 499554 A7 B7 V. Description of the invention (l t7) Catheter Another embodiment of the plug-in device is illustrated in FIG. For example, it can be used as a channel or connecting element 12 according to the first figure for connecting the lines 7a, 10a and approaching the firewall 11 from both sides, and the end of individual lines is tied on the other side. The structure of this type of catheter insertion device largely corresponds to that according to the sixth figure, in which the connecting element 16 has two wiring connections 7a, 10a. The connection element 14 is provided with two connection openings, which are coaxial with the lines 7 and 10. Although the two holding configurations 25 and 25a are provided for holding the components 26 in the exemplary embodiment according to the seventh figure, the connection system can also be fixed by a single holding configuration 25, as can be seen in the ninth figure Out. The connecting element 12a shown in the ninth figure has a connecting element 14 having a connecting bolt 27 and two connecting openings, which are arranged with respect to each other in the diameter direction and are not shown further. The holding member 26 has connectors for both the wires 7, 10, and the wires 7, 10 are tied in place on the holding member 26. The holding configuration 25 is arranged at the center 'between the two connectors for the lines 7, 10, so as to create a symmetrical force state. The catheter insertion device 1 has a fluid-tight connector and a snap-in device 25 for particularly simple and reliable assembly. When its fixing element is axially connected, it has an extremely easy function and Unreleasable buckle when passing more than one buckle point. A tension spring is used as the snap-in element, and the tension spring is designed as a ring and itself is used as a stopper member. This system ensures, in particular, a low actuation force and minimizes the margin of axial movement. 18 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) • 'ϊργ r