JPH01140009U

JPH01140009U -

Info

Publication number: JPH01140009U
Application number: JP3657888U
Authority: JP
Priority date: 1988-03-18
Filing date: 1988-03-18
Publication date: 1989-09-25
Anticipated expiration: 2003-03-18
Also published as: JPH0516405Y2

Description

[Brief explanation of the drawing]

第１図、第２図、本考案の実施例のアンカーボ
ルトの正面図および分解斜視図、第３図ａ，ｂ、
スリーブの下端部であつて各スリツトで隔設され
る各スカート片の内周壁の、植設後のアンカーボ
ルトの拡径部分に対接する各部分との対応を示す
断面図およびスリーブ下端部の斜視図、第４図ａ
〜ｄ、第３図ｂの各スリツトで隔設される各スカ
ート片の内周壁の、同図にＡ―Ａ，Ｂ―Ｂ，Ｃ―
Ｃ，Ｄ―Ｄで示す各横断方向の曲率を示す各横断
図、第５図ａ，ｂ、拡径もしくは散開後のスリー
ブの下端部の斜視図、第６図ａ〜ｄ、第５図のス
リーブの下端部の内周壁の曲率を示す各横断面で
の横断面図、第７図、第８図、従来例を示すアン
カーボルトの正面図および分解斜視図、第９図ａ
，ｂ、第７図に示す従来のスリーブの下端部の内
周壁の曲率を示す各横断面での横断面図、第１０
図ａ，ｂ、同拡径後の曲率を示す横断面図。Ａ……アンカーボルト、１……ボルト本体、１
ａ……拡径部分（下端拡径部）、１ｂ……螺設部
、２……スリーブ、２Ａ……下端部、２ａ……ス
リツト、２ｂ〜２ｄ……各段のスカート片、２Ｂ
……上部。 Fig. 1, Fig. 2, front view and exploded perspective view of the anchor bolt according to the embodiment of the present invention, Fig. 3 a, b,
A cross-sectional view and a perspective view of the lower end of the sleeve showing the correspondence between the inner circumferential wall of each skirt piece, which is the lower end of the sleeve and is separated by each slit, and which comes into contact with the enlarged diameter portion of the anchor bolt after implantation. Figure, Figure 4a
~d, A-A, B-B, C- of the inner circumferential wall of each skirt piece separated by each slit in Fig. 3b.
Cross-sectional views showing the curvature in each transverse direction indicated by C and D-D; Figures 5a and b; perspective views of the lower end of the sleeve after diameter expansion or expansion; Cross-sectional views at each cross-section showing the curvature of the inner circumferential wall of the lower end of the sleeve, FIGS. 7 and 8, a front view and an exploded perspective view of an anchor bolt showing a conventional example, and FIG. 9a
, b, a cross-sectional view at each cross-section showing the curvature of the inner circumferential wall of the lower end of the conventional sleeve shown in FIG.
Figures a and b are cross-sectional views showing the curvature after diameter expansion. A... Anchor bolt, 1... Bolt body, 1
a... Expanded diameter part (lower end enlarged diameter part), 1b... Threaded part, 2... Sleeve, 2A... Lower end, 2a... Slit, 2b to 2d... Skirt piece of each stage, 2B
...Top.

Claims

[Scope of utility model registration request]

An anchor bolt having a bolt body having an enlarged diameter portion such as a tapered body expanding at the lower end, and a sleeve that is sheathed around the side circumference of the bolt body and locks the bolt body in a hole to be implanted, The sleeve is divided into a lower end portion (hereinafter referred to as a skirt piece) that contacts the enlarged diameter portion of the bolt body and an upper portion that substantially contacts a portion above the enlarged diameter portion of the bolt body, and further has a cut surface in the transverse direction. The skirt pieces of each divided stage, which are divided into a plurality of stages in the axial direction, are separated by axial slits formed at the lower end of the sleeve to form each skirt piece, and each part of the inner circumferential wall of each skirt piece The curvature in the transverse direction is previously formed to be equal to the curvature of each part of the outer circumferential wall of the enlarged diameter portion of the lower end of the bolt main body that faces each other when the bolt is completely installed.