JPH0231708U

JPH0231708U -

Info

Publication number: JPH0231708U
Application number: JP10913088U
Authority: JP
Priority date: 1988-08-22
Filing date: 1988-08-22
Publication date: 1990-02-28
Anticipated expiration: 2003-03-01
Also published as: JPH058089Y2

Description

[Brief explanation of drawings]

第１図は本考案に係る締結装置の締結状態を示
す横断面図、第２図は第１図に示す締結装置の非
締結状態を示す横断面図である。１０：締結装置、１２：型枠、１４，１６：半
割体、１８，２０：フランジ、２２，２４，４０
：孔、２６：保持部材、３０：ばね受部材、３２
：ボルト、３４：ナツト、３６：ばね部材、３８
：貫通孔、４２：ボルトの軸部、４２ａ：シヤン
ク部分、４２ｂ：ねじ部分、４４：ボルトの頭部
、４６：部位、４８：リング、５０：スリーブ、
５２：ストツパ。 FIG. 1 is a cross-sectional view showing the fastening device according to the present invention in a fastened state, and FIG. 2 is a cross-sectional view showing the fastening device shown in FIG. 1 in an unfastened state. 10: Fastening device, 12: Formwork, 14, 16: Half body, 18, 20: Flange, 22, 24, 40
: hole, 26: holding member, 30: spring receiving member, 32
: Bolt, 34: Nut, 36: Spring member, 38
: Through hole, 42: Bolt shaft, 42a: Shank part, 42b: Threaded part, 44: Bolt head, 46: Part, 48: Ring, 50: Sleeve,
52: Stoppa.

Claims

[Claims for Utility Model Registration] (1) For the purpose of joining a pair of halves that are butted against each other to form a cylindrical formwork, a pair of halves that are fixed to each side of both halves and that are A fastening device for fastening a pair of flanges having holes that align with each other, the holding member being fixed to the outside of one of the flanges and having a through hole that aligns with the hole of the flange, the through hole of the holding member, and a bolt having a shaft extending through holes in both flanges; a nut screwed onto the bolt on the outside of the other flange; and a head of the bolt and the one flange on the outside of the through hole of the holding member. and a spring member disposed between the spring member and the spring member that presses the bolt in a direction separating the bolt from the one flange. (2) For joining a pair of halves butted against each other to form a cylindrical formwork, a pair of halves each having a hole aligned with the other, each fixed to each side of both halves; A fastening device for fastening flanges, which comprises: a holding member fixed to the outside of one of the flanges and having a through hole aligned with a hole in the flange; a spring receiving member having a hole; a bolt having a shaft portion extending through the hole, the through hole of the holding member, and the holes of both flanges, and a head that abuts the spring bearing member; and a nut screwed onto the bolt on the outside of the other flange; a spring member disposed outside the through hole of the holding member between the spring receiving member and the one flange, and pressing the bolt in a direction to separate the bolt from the one flange;
Fastening device. (3) The fastening device according to claim (1) or (2), wherein the threads of the bolt and the nut are each made of a trapezoidal thread. (4) The shaft portion of the bolt includes a shank portion connected to the head of the bolt, and a threaded portion connected to the shank portion, and the holding member includes a ring capable of engaging with the threaded portion of the bolt. term(1
) or the fastening device described in (2). (5) a sleeve disposed on the outside of the other flange concentrically with the hole provided in the flange;
The fastener according to claim 1 or 2, comprising a stopper removably mounted within the sleeve, the stopper preventing the nut received in the sleeve from falling out of the sleeve. Device. (6) The fastening device according to claim 5, wherein the nut has a polygonal planar shape, and the hollow portion of the sleeve has the same cross-sectional shape as the nut's planar shape. (7) For joining a pair of halves butted against each other to form a cylindrical formwork, a pair of halves each having a hole aligned with the other, each fixed to each side of both halves, is provided. A fastening device for fastening flanges, the holding member being fixed to the outside of one of the flanges and having a through hole aligned with the hole in the flange, and extending through the through hole in the holding member and the holes in both flanges. A bolt having a shaft portion, a nut screwed onto the bolt on the outside of the other flange, and a spring member that presses the bolt in a direction separating the bolt from the one flange, and each of the bolt and the nut has a trapezoidal thread. A fastening device having: