JPH0355910U

JPH0355910U -

Info

Publication number: JPH0355910U
Application number: JP11720089U
Authority: JP
Priority date: 1989-10-05
Filing date: 1989-10-05
Publication date: 1991-05-29

Description

[Brief explanation of drawings]

第１図は本考案に係るスリーブ打込み式拡開ア
ンカーの要部切欠き正面図、第２図は筒状支持体
の正面図、第３図及び第４図は同使用例を示す縦
断正面図、第５図及び第６図はそれぞれ別の実施
例を示す要部縦断正面図、第７図は従来例を示す
縦断正面図である。１１……軸本体、１１ａ……中間軸部、１２…
…円錐状拡大部、１３……雄ねじ部、１４……拡
開スリーブ、１５……スリツト、１６……拡張片
、１７……環状溝、１８……突起部、２０……筒
状支持体。 Fig. 1 is a cutaway front view of the main parts of the sleeve-driving type expansion anchor according to the present invention, Fig. 2 is a front view of the cylindrical support, and Figs. 3 and 4 are longitudinal sectional front views showing an example of its use. , FIG. 5 and FIG. 6 are longitudinal sectional front views of main parts showing different embodiments, respectively, and FIG. 7 is a longitudinal sectional front view showing a conventional example. 11...Shaft body, 11a...Intermediate shaft portion, 12...
. . . Conical enlarged portion, 13 . . . External threaded portion, 14 .

Claims

[Claims for Utility Model Registration] (1) An expansion anchor fixed to a pilot hole with a conical undercut at the inner depth, having a conical enlarged portion at the front end and a male thread at the rear end. and an expansion sleeve that is fitted onto the shaft body and has a plurality of slits extending in the axial direction from the front end, with expansion pieces formed between the slits. In the sleeve driving type expansion anchor, the expansion sleeve is formed to be shorter than the shaft body, and is slidably fitted in an intermediate portion of the shaft body. . (2) The expansion sleeve has an inner diameter smaller than the outer diameter of the male threaded portion, and the expansion sleeve is slidably fitted into an intermediate portion of the shaft body while being locked to the male threaded portion. The sleeve-driving type expansion anchor according to claim (1). (3) The expansion sleeve has an inner diameter larger than the outer diameter of the male threaded portion, and is locked to the male threaded portion by a protrusion formed by caulking a portion of the expansion sleeve inward. 2. The sleeve-driving expansion anchor according to claim 1, wherein the expansion sleeve is slidably fitted to an intermediate portion of the shaft body. (4) the expansion sleeve is formed to have a short length approximately twice the axial length of the conical expansion portion of the shaft body, and the annular groove is provided on the outer periphery of the central portion thereof; The sleeve driving type expansion anchor according to any one of claims (1) to (3), wherein the inner end of the slit reaches the annular groove. (5) A female threaded tube is fitted and connected to the male threaded portion of the shaft body, and the outer diameter of the female threaded tube is smaller than the outer diameter of the expansion sleeve.
The sleeve-driving expansion anchor according to any one of 4). (6) Claims (1) to (4) further comprising a cylindrical support that is fitted onto the shaft body and inserted into the opening of the pilot hole after the shaft body is fixed in the pilot hole. ) The sleeve-driving expansion anchor according to any one of items 1 and 2.