PROBLEM TO BE SOLVED: To provide a tapered lead-in portion for an interference fit fastener.SOLUTION: An assembly comprises a first structural element and a second structural element having aligned holes, a fastener that occupies at least respective portions of these holes without having a surrounding sleeve, and an engagement component that is coupled to the fastener. The fastener comprises: a head portion; a circular cylindrical shank extending from the head portion; an engagement portion comprising external projection portions; and a transition part disposed between the shank and the engagement part. The transition portion comprises a tapered lead-in section that intersects the shank at a shank/lead-in portion intersection portion, and a radiused lead-in section that intersects the tapered lead-in section. The tapered lead-in section is gradually tapered in a first axial direction toward the engagement portion, and has a first profile that is linear and has a taper angle of 20 degrees or less, and the radiused lead-in section is abruptly curved in the first axial direction, and has a second profile that is a circular arc having a prescribed radius.SELECTED DRAWING: Figure 4

    【課題】締まり嵌め締結具のためのテーパ状導入部を提供する。【解決手段】アセンブリは、位置合わせされた孔を有する第1の構造要素および第2の構造要素と、周囲のスリーブなしで孔のそれぞれの少なくとも部分を占める締結具と、締結具に結合される噛合部品とを備える。締結具は、頭部と、頭部から延在する円柱形のシャンクと、外部突出部を備える噛合部分と、シャンクと噛合部分との間に配置された移行部分とを備える。移行部分は、シャンク/導入部交差部でシャンクと交わるテーパ状導入セクションと、テーパ状導入セクションと交わるアール状導入セクションとを備える。テーパ状導入セクションは、噛合部分に向かう第1の軸方向に向かって徐々にテーパ状になっており、直線状でありかつ20度以下のテーパ角度である第1の輪郭を有し、アール状導入セクションは、第1の軸方向に向かって急に湾曲しており、所定半径を有する円弧である第2の輪郭を有する。【選択図】図4


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    Title :

    TAPERED LEAD-IN PORTION FOR INTERFERENCE FIT FASTENER


    Additional title:

    締まり嵌め締結具のためのテーパ状導入部


    Contributors:

    Publication date :

    2018-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / B64C AEROPLANES , Flugzeuge / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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