JPS6094538U - Sleeve for forming through holes in reinforced concrete structures - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案の考案の一実施例を示す一部破断した
側面図、第２図は第１図の■−■線矢視図、第３図Ａ、
　Ｂは型枠内への設置過程を示す斜視図である。 １・・・内筒、２・・・外筒、３，４・・・ねじ部、５
，６′・・・蓋板、７，８・・・突起、９・・・型枠パ
ネル。Fig. 1 is a partially cutaway side view showing an embodiment of the invention, Fig. 2 is a view taken along the line ■-■ in Fig. 1, Fig. 3A,
B is a perspective view showing the installation process in the formwork. 1...Inner cylinder, 2...Outer cylinder, 3, 4...Threaded part, 5
, 6'... Lid plate, 7, 8... Projection, 9... Formwork panel.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 金属製の内筒と外筒とを、内筒の外周面および外筒の内
周面との各々に形成したねじ部によって連結することに
より全体として伸縮自在に構成され、かつ蓋板が内筒と
外筒との各々の開口端に外取し可能に設けられるととも
に、型枠パネルに食い込ませる突起が前記蓋板の外表面
に形成されていることを特徴とする鉄筋コンクリート構
造物における貫通孔形成用スリーブ。The metal inner cylinder and outer cylinder are connected by threads formed on the outer circumferential surface of the inner cylinder and the inner circumferential surface of the outer cylinder, respectively, so that the entire structure can be expanded and contracted, and the lid plate is connected to the inner cylinder. Formation of a through-hole in a reinforced concrete structure, characterized in that a protrusion is removably provided at the opening end of each of the cover plate and the outer cylinder, and a protrusion that bites into the formwork panel is formed on the outer surface of the cover plate. Sleeve for.