JP4606137B2 - Battledore bolt - Google Patents

Description

本発明は、木造建物の柱と梁を接合する際などに用いている羽子板ボルトに関するものである。   The present invention relates to a battledore bolt used for joining columns and beams of a wooden building.

一端にボルト杆の基部を固着した羽子板部に締付けボルトの貫通孔を設けて羽子板状にした構造のものが一般で、概し、ボルト杆を柱に貫通させて柱より突出するボルト杆の先端にナットを螺合締付ける一方、横架材を通じた締付けボルトの先端を羽子板部側の前記貫通孔に貫通させて突出させ、該先端に締付けナットを螺合締付けるようにして柱と横架材を接合するようにしたものである。   Generally, the structure has a structure in which a through hole for a tightening bolt is provided in the wing plate part with the base of the bolt 固 着 fixed at one end, and the end of the bolt 突出 projecting from the column by passing the bolt に through the column. At the same time, the nut and the horizontal member are screwed and tightened while the tip of the tightening bolt through the horizontal member is projected through the through hole on the side of the blade plate, and the tightening nut is screwed and tightened to the tip. It is made to join.

前記従来例は、柱に貫通させたボルト杆に螺合したナットを螺合締付けることにより、締付けボルトを組付けた横架材を柱側に引き寄せるようにして柱と横架材との接合強度を図るのであるが、横架材に柱から離開する方向すなわちボルト杆による横架材の引き寄せ方向と反対方向の荷重が負荷されると、該荷重は締付けボルトを介して締付けボルトを貫通させた貫通孔部に必要以上に集中し、貫通孔部が破断し、羽子板ボルトとしての本来の機能が損われる場合がある。   In the conventional example, the fastening strength of the column and the horizontal member is drawn by pulling the horizontal member assembled with the tightening bolt to the column side by screwing and tightening the nut screwed into the bolt rod penetrated through the column. However, when a load is applied to the horizontal member in the direction away from the column, that is, the direction opposite to the direction in which the horizontal member is drawn by the bolt rod, the load penetrates the tightening bolt through the tightening bolt. It may concentrate more than necessary in the through-hole portion, the through-hole portion may break, and the original function as a battledore bolt may be impaired.

本発明は、従来例の斯様な欠点に着目し、破断の発生を可及的に防ぐ羽子板ボルトを提供すべく創案したものである。   The present invention has been devised to provide a battledore bolt that prevents the occurrence of breakage as much as possible by paying attention to such drawbacks of the conventional example.

一端にボルト杆の基部を固着した羽子板部に締付けボルトの貫通孔を設けて成り、前記貫通孔を、前記羽子板部部分をリブ状にして上方に膨出させて設け、しかも、下端が前記羽子板部の下面より突出する円筒部の内周縁で構成したこととしたものである。 A through-hole of a tightening bolt is provided in a wing plate portion to which a base portion of a bolt rod is fixed at one end, and the through-hole is provided by bulging upward with the wing plate portion portion being ribbed , and the lower end is the wing plate. It is supposed to be constituted by the inner peripheral edge of the cylindrical portion protruding from the lower surface of the portion .

本発明によれば、貫通孔の縁部に締付けボルトを介して荷重が集中しても該縁部を円筒部の内周縁で構成するものであるから当該縁部に生じる破断を可及的に防ぐことができる。   According to the present invention, even if a load is concentrated on the edge of the through-hole via the tightening bolt, the edge is constituted by the inner peripheral edge of the cylindrical portion, so that breakage that occurs in the edge is made as much as possible. Can be prevented.

また、貫通孔を、いわばリブ状態で構成するものであるから羽子板部の屈曲性やせん断性の向上を図れ、地震などの振動によるナットのゆるみをスプリング効果により抑制することも期待でき、総じて耐久性的な、接合強度を増大させた羽子板ボルトを提供できる。   In addition, since the through-hole is configured in a so-called rib state, it can be expected to improve the flexibility and shearing of the battledore, and to suppress the loosening of the nut due to vibration such as an earthquake by the spring effect, which is generally durable. It is possible to provide a wing plate bolt having increased sexual bonding strength.

図面は本発明に係る羽子板ボルトの一実施例を示し、図１は使用状態を示す正面図、図２は図１の要部の拡大断面図である。   The drawings show one embodiment of a battledore bolt according to the present invention, FIG. 1 is a front view showing a use state, and FIG. 2 is an enlarged cross-sectional view of a main part of FIG.

本発明に係る羽子板ボルトＡは、羽子板部（主体板）１の長手方向の一端に、相対する両端を屈曲状にして立ち上り部片２，２を相対設し、該立ち上り部２の上端にボルト杆３の基端を固着（熔接）する一方、前記羽子板部１の他の一端側には締付けボルト４を挿通する貫通孔５を設けて構成したものである。   A battledore bolt A according to the present invention has a rising part 2, 2 provided relative to one end in a longitudinal direction of a battledore part (main plate) 1 with bent opposite ends, and a bolt at the upper end of the rising part 2. While the base end of the flange 3 is fixed (welded), the other end side of the battledore part 1 is provided with a through hole 5 through which a tightening bolt 4 is inserted.

この羽子板ボルトＡを構成する前記貫通孔５は、前記羽子板部１の前記他の一端側の中央部分をリング形のリブ状にして（プレス搾り加工して）上方に膨出させて設けた円筒部６の内周縁６ａで構成し、円筒部６の下端は、前記羽子板部１の下面１´より下方にわずかに突出させてある（この突出量は、円筒部６をふくんだリブ状部６Ａのプレス加工によって得られる形態の大きさによって定まる）。   The through-hole 5 constituting the battledore bolt A is a cylinder provided by bulging upward the center part of the other end side of the battledore part 1 in the form of a ring-shaped rib (pressed). The lower end of the cylindrical portion 6 is slightly protruded downward from the lower surface 1 ′ of the battledore portion 1 (this protruding amount is a rib-shaped portion including the cylindrical portion 6). It is determined by the size of the shape obtained by 6A press working).

しかして、ボルト杆３を柱１０に形成した通し孔１１に貫通させて羽子板部１を横架材１２に重ね合わせるようにして貫通孔５を横架材１３に形成した通し孔１４と一致させ、通し孔１４側から前記締付けボルト４を貫通させて前記貫通孔５より突出する締付けボルト４の先端に締付けナット７を螺合締付けて羽子板部１を横架材１３に固定する一方、柱１０の通し孔１１より突出するボルト杆３の先端にナット８を螺合締付けるようにして羽子板ボルトＡを用い、柱１０と横架材１３は接合される。   Accordingly, the through hole 5 is made to coincide with the through hole 14 formed in the horizontal member 13 such that the bolt rod 3 is passed through the through hole 11 formed in the column 10 and the battledore portion 1 is overlapped with the horizontal member 12. The fastening bolt 4 is penetrated from the through hole 14 side, and a fastening nut 7 is screwed and fastened to the tip of the fastening bolt 4 protruding from the through hole 5 to fix the battledore portion 1 to the horizontal member 13, while the column 10 The pillar 10 and the horizontal member 13 are joined together using the wing plate bolt A so that the nut 8 is screwed and fastened to the tip of the bolt rod 3 protruding from the through hole 11.

なお、締付けボルト４とこれに螺合した締付けナット７によって横架材１３に締め付けられることにより円筒部６の、羽子板部下面１´より突出する下端（先端）６´は横架材１３に減り込んで横架材１３に強固に固定される。   The lower end (front end) 6 ′ of the cylindrical portion 6 protruding from the lower surface 1 ′ of the cylindrical portion 6 is reduced to the horizontal member 13 by being fastened to the horizontal member 13 by the tightening bolt 4 and the tightening nut 7 screwed into the bolt. And firmly fixed to the horizontal member 13.

使用状態を示す正面図。The front view which shows a use condition. 図１の要部の拡大断面図。The expanded sectional view of the principal part of FIG.

符号の説明Explanation of symbols

１ 羽子板部
３ ボルト杆
４ 締付けボルト
５ 貫通孔
６ 円筒部
６ａ 内周縁
DESCRIPTION OF SYMBOLS 1 Lung board part 3 Bolt rod 4 Clamping bolt 5 Through-hole 6 Cylindrical part 6a Inner periphery

Claims (1)

一端にボルト杆の基部を固着した羽子板部に締付けボルトの貫通孔を設けて成り、前記貫通孔を、前記羽子板部部分をリブ状にして上方に膨出させて設け、しかも、下端が前記羽子板部の下面より突出する円筒部の内周縁で構成した羽子板ボルト。 A through-hole of a tightening bolt is provided in a wing plate portion to which a base portion of a bolt rod is fixed at one end, and the through-hole is provided by bulging upward with the wing plate portion portion being ribbed , and the lower end is the wing plate. A battledore bolt composed of an inner peripheral edge of a cylindrical portion protruding from the lower surface of the portion .

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