JPS6224012A - Anchor for concrete - Google Patents

Anchor for concrete

Info

Publication number
JPS6224012A
JPS6224012A JP16373385A JP16373385A JPS6224012A JP S6224012 A JPS6224012 A JP S6224012A JP 16373385 A JP16373385 A JP 16373385A JP 16373385 A JP16373385 A JP 16373385A JP S6224012 A JPS6224012 A JP S6224012A
Authority
JP
Japan
Prior art keywords
diameter
concrete
anchor body
expanded
distal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16373385A
Other languages
Japanese (ja)
Inventor
島野 隆司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimano Industrial Co Ltd filed Critical Shimano Industrial Co Ltd
Priority to JP16373385A priority Critical patent/JPS6224012A/en
Publication of JPS6224012A publication Critical patent/JPS6224012A/en
Pending legal-status Critical Current

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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

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、固化後のコンクリ−1−1特に気泡コンクリ
−1−の壁や床に打込んで使用するコンクリート用アン
カー、詳しくは、中空状のアンカー本体の先端側を拡径
可能に構成し、かつ、この先端側の内周にテーパ面を形
成して、後端側より拡径用の固定具を挿入することによ
り、先端側を拡径してコンクリートに固定するコンクリ
ート用アンカーに関する。
Detailed Description of the Invention [Field of Industrial Application] The present invention relates to concrete anchors that are used by being cast into the walls and floors of concrete 1-1, particularly cellular concrete 1, after solidification, specifically, hollow concrete anchors. The distal end of the shaped anchor body is configured to be expandable in diameter, and by forming a tapered surface on the inner periphery of the distal end and inserting a fixing device for diameter expansion from the rear end, the distal end can be expanded. This relates to a concrete anchor that is expanded in diameter and fixed to concrete.

〔従来の技術〕[Conventional technology]

この種のアンカーにおいて、その先端側を拡径してコン
クリ−1に固定するのに、従来、後端側より挿入した拡
径用の固定具を叩き棒を介してハンマーで叩き、先端側
へ打込んで、先端側を拡径、固定する技術が知られてい
る(例えば、本出願人であるシマノ工業株式会社製のホ
ール・プラグなど)。
In this type of anchor, in order to expand the diameter of the tip end and fix it to the concrete 1, conventionally, the diameter expansion fixing device inserted from the rear end side is hit with a hammer via a beating rod, and the tip side is fixed to the concrete 1. A technique is known in which the diameter of the tip is expanded and fixed by driving the hole plug (for example, a hole plug manufactured by Shimano Industries, Ltd., the applicant of the present application).

しかしながら、この従来公知のものは、通常のコンクリ
−1−を対象とするもので、そのため、ハンマーなどで
叩いて衝撃的に固定具を打込んで、アンカー本体の先端
側を拡径するものてあった。つまり、通常のコンクリ−
1・においては、固化後の圧縮強度が概ね400kg/
c+nで、強い抵抗力を有しているため、ハンマーなど
で叩いて瞬間的に強い力でアンカー本体の先端側を拡径
しなければならなかったのが実状で、また、アンカー本
体の最先端部の拡径率も、拡径時の外径が非拡径時の外
径の1.2倍程度が限度であった。
However, this conventionally known method is intended for ordinary concrete, and therefore, the diameter of the tip of the anchor body is expanded by striking the anchor with a hammer or the like and impacting the fixing device. there were. In other words, regular concrete
In 1., the compressive strength after solidification is approximately 400 kg/
c + n, which has a strong resistance, so it was necessary to instantaneously expand the diameter of the tip end of the anchor body by hitting it with a hammer, etc. The limit for the diameter expansion rate of the part was that the outer diameter when expanded was about 1.2 times the outer diameter when not expanded.

ところで、近年、通常のコンクリートに代えて気泡コン
クリートが多用される傾向にあるが、この気泡コンクリ
ートは固化後の圧縮強度が40kg/c+J程度と弱く
、それにもかかわらず、気泡コンクリートを対象とする
アンカーにおいても、やはりハン°7−などで叩いて瞬
間的に強い力で拡径する方式を採用していたがため、ア
ンカー本体の先端側拡径時に、気泡コンクリ−1−の内
部や外面を破壊し、そのため、必要な引抜荷重を得られ
ない欠点があった。そこで、拡径される先端側の形状を
蛸足やウニ足など、特殊な形状にした気泡コンクリ−1
・用のアンカーも出現するに至ったが、気泡コンクリー
トとの馴染が悪く、霜望通りの引抜荷重を得られるもの
は皆無であった。
By the way, in recent years, there has been a tendency for aerated concrete to be used frequently in place of regular concrete, but this aerated concrete has a weak compressive strength of about 40 kg/c+J after solidification, and despite this, anchors targeting aerated concrete In this method, the diameter was expanded instantaneously with strong force by hitting with a hammer, etc., so when the diameter of the anchor body was expanded on the tip side, the inside and outside of the cellular concrete 1- was destroyed. However, there was a drawback that the required pull-out load could not be obtained. Therefore, we created foam concrete 1 with a special shape such as an octopus foot or a sea urchin foot on the tip side where the diameter is expanded.
・Anchors for concrete use have also appeared, but they have poor compatibility with aerated concrete, and none of them have been able to obtain the desired pull-out load.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は、このような現状にかんがみて完成したもので
、気泡コンクリートにおいても、その内部などを破壊す
ることなく先端側を確実に大きく拡径することができ、
それによって、所望の引抜荷重を得ることのできるアン
カーの提供を目的とする。
The present invention was completed in view of the current situation, and it is possible to reliably greatly expand the diameter of the tip side of aerated concrete without destroying its interior, etc.
The object of the present invention is to provide an anchor that can thereby obtain a desired pull-out load.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

この目的を達成するため、本発明によるコンクリ−1・
用アンカーは、拡径用の固定具にアンカー本体の後端側
の内周面に刻設した雌ねじに螺合する誰ねじを刻設し、
かつ、前記アンカー本体の最先端部におりる内径と外径
の比率を′215以下にするとともに、前記固定具によ
ってアンカー本体の先端側を拡径した際に、その最先端
部の外径が非拡径時の外径の1.5倍以上になるように
構成しであることを特徴とする。
In order to achieve this objective, concrete 1.
The anchor for diameter expansion has a screw thread carved into the fixing device for diameter expansion that engages with a female thread carved on the inner circumferential surface of the rear end of the anchor body.
Also, the ratio of the inner diameter to the outer diameter at the most distal end of the anchor body is set to be 215 or less, and when the distal end side of the anchor body is expanded by the fixing device, the outer diameter of the distal end thereof is It is characterized by being configured so that the outer diameter is 1.5 times or more the outer diameter when the diameter is not expanded.

〔作 用〕[For production]

このように、固定具に雄ねじを刻設して、固定具の先端
側への移動を、固定具の回転推進によって行うものであ
るから、この固定具の移動に伴って、先端側内周のテー
パ面を徐kに押圧し、アンカー本体の先端側をゆっくり
と拡径し、気泡コンフートにおいても、拡径時にコンク
リートの一部を大きく破壊させるようなことはない。
In this way, the fixing device is provided with a male thread, and the movement of the fixing device toward the distal end is achieved by the rotational propulsion of the fixing device. By gradually pressing the tapered surface and slowly expanding the diameter of the tip side of the anchor body, even in bubble comfort, a part of the concrete will not be significantly destroyed during diameter expansion.

その上、アンカー本体の先端側拡径時には、その最先端
部の外径が非拡径時の1 、5 (iff以上になるの
で、アンカー本体の先端側は気泡コンクリートの壁面に
強力な力て押圧され、そのまま塑性変形して強固に固定
される。
Furthermore, when the diameter of the tip of the anchor body is expanded, the outer diameter of the tip end becomes greater than 1.5 (if) when the diameter is not expanded, so the tip of the anchor body is subjected to strong force against the wall of the aerated concrete. When pressed, it undergoes plastic deformation and is firmly fixed.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように、本発明のアンカーによ
れば、コンクリートの内部や外面を破壊することなくア
ンカー本体の先う:チ側を確実にかつ大きく拡径できる
ので、気泡コンクリートに対して強固に固定するごとが
でき、充分なる引抜荷重を得ることができるとともに、
後端側の内周面に刻設した雌ねじ部分を固定具の回転推
進用に役立てた後、さらに取付は用ボルトなどの螺合用
とに兼用することができる。
As is clear from the above explanation, according to the anchor of the present invention, the diameter of the front end of the anchor body can be reliably and greatly expanded without destroying the inside or outside of the concrete, so that it can be used against aerated concrete. It can be firmly fixed and can obtain sufficient pull-out load,
After the female threaded portion carved on the inner circumferential surface of the rear end side is used to propel the rotation of the fixing tool, it can also be used for mounting a screw for use with a bolt, etc.

〔実施例〕〔Example〕

本発明の実施例を図面に基づいて説明すると、第1図お
よび第2図に示すように、アンカー本体(1)は中空状
で、全体が金属製の材料から形成されている。アンカー
本体(1)の先端側(2)には、アンカー本体(1)の
軸心方向に沿う合計4本の切込み(3)が設けられて拡
径可能に構成され、かつ、この先端側(2)の外周面に
は、複数条の噛込み突起(4)が設けられている。各噛
込み突起(4)は、アンカー本体(1)の後端側(5)
に向かう面がアンカー本体(1)の軸心に直交する面を
有し、先端側(2)に向かう面が先端方向に傾斜する面
を有する形状に形成され、先端側(2)拡径時に、各噛
込み突起(4)がコンクリートに強力に噛込むように構
成されている。そして、アンカー本体(1)の後端側(
5)の内周面には、雌ねじ(6)が刻設され、先端側(
2)の内周面は、全体が先!ilりで、かつ若T丸味の
あるテーパ面(7)に形成され、その最先端部(2a)
においては、内径と外径の比率が 275以下、好まし
くは雰に近くなるように構成されている。ただし、この
先端側(2)の内周面にも、後端側(5)の雌ねじ(6
)と同じピッチの雌ねじを刻設して実施することもでき
る゛。
An embodiment of the present invention will be described based on the drawings. As shown in FIGS. 1 and 2, the anchor body (1) is hollow and entirely made of metal material. A total of four notches (3) along the axial direction of the anchor body (1) are provided on the distal end side (2) of the anchor body (1) so that the diameter can be expanded, and the distal end side ( A plurality of biting protrusions (4) are provided on the outer peripheral surface of 2). Each biting protrusion (4) is located on the rear end side (5) of the anchor body (1).
The surface facing the anchor body (1) has a surface perpendicular to the axis of the anchor body (1), and the surface facing the distal end (2) has a surface inclined toward the distal end. , each biting protrusion (4) is configured to bite into concrete strongly. Then, the rear end side of the anchor body (1) (
A female thread (6) is carved on the inner peripheral surface of 5), and the tip side (
2) The entire inner circumferential surface is first! It is formed into a tapered surface (7) with a smooth and rounded shape, and its tip (2a)
In this case, the ratio of the inner diameter to the outer diameter is 275 or less, preferably close to 275. However, the inner peripheral surface of this tip side (2) also has a female thread (6) on the rear side (5).
) It is also possible to carve a female thread with the same pitch.

他方、固定具(8)の方は、第3図及び第4図に示すよ
うに、全体が円柱形状で、その外周面には、先端側の一
部を除いて、はぼ全面にアンカー本体(1)の後端側(
5)の雌ねじ(6)に螺合する雄ねじ(9)が刻設され
、その後端面に断面四角あるいは六角の嵌入穴(10)
が設けられていて、その全長がアンカー本体(1)の先
端側(2)より若干長い程度とされている。この固定具
(8)を回転させるための冶具(11)は、第5図およ
び第6図に示すように、その前端に前記嵌入穴(10)
に整合する嵌入部材(12)が設けられ、後端に六角の
ボルト頭(13)が設けられるとともに、その中間部に
固定具(8)の挿入を規制する段部(14)が設けられ
た構成とされている。
On the other hand, the fixing device (8) has a cylindrical shape as a whole, as shown in FIGS. (1) Rear end side (
A male screw (9) is carved into the female screw (6) of 5), and a fitting hole (10) with a square or hexagonal cross section is formed on the rear end surface.
is provided, and its total length is slightly longer than the distal end side (2) of the anchor body (1). As shown in FIGS. 5 and 6, the jig (11) for rotating the fixture (8) has the insertion hole (10) at its front end.
A fitting member (12) that matches the fitting member (12) is provided, a hexagonal bolt head (13) is provided at the rear end, and a stepped portion (14) for regulating the insertion of the fixing tool (8) is provided at the intermediate portion thereof. It is said to be composed of

次に、このアンカー本体(1)をコンクリ−1・壁に固
定する手順を第7図にもとづいて説明すると、まず、コ
ンクリ−1115)の壁に図外の1・。
Next, the procedure for fixing this anchor body (1) to a concrete wall (1115) will be explained based on FIG.

リルを用いてアンカー本体(1)とほぼ同径で同長の穴
を穿ち、(イ)に示すように、この穴内にアンカー本体
(1)を挿入する。次に、(υ)に示すように、冶具(
11)を用いてアンカー本体(1)に予め装着しておい
た固定具(8)の嵌入穴(10)に治具(11)の嵌入
部材(12)を嵌入して回転させる。
Drill a hole with approximately the same diameter and length as the anchor body (1) using a rill, and insert the anchor body (1) into this hole as shown in (A). Next, as shown in (υ), the jig (
11) is used to fit the fitting member (12) of the jig (11) into the fitting hole (10) of the fixture (8) previously attached to the anchor body (1) and rotate it.

その場合、治具(11)の後端にボルト頭(13)が設
けられているため、市販のスパナ、ボックスレンチ、ラ
チェソi−などを用いて簡単に回転推進させることがで
き、この回転推進に伴って固定具(8)の先端がテーパ
面(7)に当接してアンカー本体(1)の先端側(2)
を徐々に押し拡げるため、先端側(2)の四つ割り部分
はゆっ(りと押し拡げられて噛込み突起(4)がコンク
リート(15)に噛込むことになる。その後、さらに回
転11進させると、(ハ)に示すように、冶具(11)
の段部(14)がアンカー本体(1)の後端面またはコ
ンクリート(15)の壁面に当接して回転が阻止され、
この状態においては、固定具(8)の先端はアンカー本
体(1)の先端とばぼ面一となり、かつ、後端側の雄ね
じ(9)の一部は雌ねしく6)に螺合したままとなり、
これで先端側(2)の拡径、固定が完了する。この場合
、アンカー本体(1)の先端側(2)の最先端部(2a
)においては、内径と外径の比率が275以下になるよ
うに構成され、かつ、拡径時に、最先端部(2a)の外
径が非拡径時の外径の1.5倍以上になるように構成さ
れているため、先端側(2)は大きく拡径し、それにも
かかわらず拡径時にコンクリート(15)を破壊するこ
とが少ないので、気泡コンクリートであっても、充分な
る引抜荷重が得られるのである。そして、その後、冶具
(11)を抜き取りさえずれば、後端側(5)の中空部
に空間が残るため、(ニ)に示すように、そのまま取付
は用ポル) (16)を螺合させることにより、懸掛物
(17)などを簡単、確実に地付けることができる。
In that case, since the bolt head (13) is provided at the rear end of the jig (11), it can be easily rotated using a commercially available spanner, box wrench, ratchet saw, etc. As a result, the tip of the fixture (8) comes into contact with the tapered surface (7) and the tip side (2) of the anchor body (1)
In order to gradually push and spread the tip side (2), the quarter part on the tip side (2) is slowly spread and the biting protrusion (4) bites into the concrete (15). Then, as shown in (c), the jig (11)
The stepped portion (14) contacts the rear end surface of the anchor body (1) or the wall surface of the concrete (15) to prevent rotation,
In this state, the tip of the fixing device (8) is flush with the tip of the anchor body (1), and a portion of the male screw (9) on the rear end side is threaded into the female thread 6). stay as it is,
This completes the diameter expansion and fixation of the distal end (2). In this case, the most extreme part (2a) of the distal end side (2) of the anchor body (1)
), the ratio of the inner diameter to the outer diameter is 275 or less, and when the diameter is expanded, the outer diameter of the distal end portion (2a) is 1.5 times or more the outer diameter when the diameter is not expanded. Because of this structure, the diameter of the tip end (2) is greatly expanded, but the concrete (15) is less likely to be destroyed when the diameter is expanded, so even if it is aerated concrete, a sufficient pull-out load can be achieved. is obtained. After that, when the jig (11) is removed and the jig (11) is removed, there will be a space left in the hollow part of the rear end (5), so as shown in (d), screw the (16) By doing so, hanging items (17) etc. can be easily and reliably placed on the ground.

4 図面の節7iiな説明 図面は本発明に係るコンクリート用アンカーの固定方法
とその固定具の実施例を示し、第1図はアンカー本体の
一部切欠き側面図、第2図は第1図のu−n線矢視図、
第3図は固定具の一部切欠き側面図、第4図は第3図の
IV −IV線矢視図、第5図は冶具の一部切欠き側面
図、第6図は第5図の■−Vl線矢視図、第7図(イ)
〜(ニ)はアンカー本体の固定手順を示す断面図である
4 Explanation of Section 7 of the Drawings The drawings show an embodiment of the concrete anchor fixing method and its fixing device according to the present invention, FIG. 1 is a partially cutaway side view of the anchor body, and FIG. A u-n line arrow view of
Fig. 3 is a partially cutaway side view of the fixture, Fig. 4 is a view taken along the line IV-IV in Fig. 3, Fig. 5 is a partially cutaway side view of the jig, and Fig. 6 is Fig. 5. ■-Vl line arrow view, Figure 7 (a)
-(D) are sectional views showing the procedure for fixing the anchor body.

(1)・・・・・・アンカー本体、 (2)・・・・・
・アンカー本体の先端側、 (2a)・・・・・・アン
カー本体の最先端部、(5)・・・・・・アンカー本体
の後端側、(6)・・・・・・雌ねじ、(7)・・・・
・・テーパ面、(8)・・・山固定具、(9)・・・・
・・雄ねじ。
(1)・・・Anchor body, (2)・・・・・・
・Distal end side of the anchor body, (2a)...Distal end of the anchor body, (5)...Rear end side of the anchor body, (6)...Female thread, (7)...
... Tapered surface, (8) ... Mountain fixing tool, (9) ...
...Male thread.

Claims (1)

【特許請求の範囲】[Claims] 中空状のアンカー本体(1)の先端側(2)を拡径可能
に構成し、かつ、この先端側(2)の内周にテーパ面(
7)を形成して、後端側(5)より拡径用の固定具(8
)を挿入することにより、先端側(2)を拡径してコン
クリート(15)に固定するコンクリート用アンカーに
おいて、前記固定具(8)に後端側(5)の内周面に刻
設した雌ねじ(6)に螺合する雄ねじ(9)を刻設し、
かつ、前記アンカー本体(1)の最先端部(2a)にお
ける内径と外径の比率を2/5以下にするとともに、前
記固定具(8)によってアンカー本体(1)の先端側(
2)を拡径した際に、その最先端部(2a)の外径が非
拡径時の外径の1.5倍以上になるように構成してある
コンクリート用アンカー。
The distal end (2) of the hollow anchor body (1) is configured to be expandable in diameter, and the inner periphery of the distal end (2) is provided with a tapered surface (
7), and insert a diameter expanding fixture (8) from the rear end side (5).
), the diameter of the tip side (2) is expanded and the concrete anchor is fixed to the concrete (15) by inserting the fixing device (8). A male thread (9) is carved to screw into the female thread (6),
Moreover, the ratio of the inner diameter to the outer diameter at the distal end portion (2a) of the anchor body (1) is set to 2/5 or less, and the distal end side (2a) of the anchor body (1) is
2) A concrete anchor configured such that when the diameter of the concrete anchor is expanded, the outer diameter of the leading edge portion (2a) is 1.5 times or more the outer diameter when the diameter is not expanded.
JP16373385A 1985-07-23 1985-07-23 Anchor for concrete Pending JPS6224012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16373385A JPS6224012A (en) 1985-07-23 1985-07-23 Anchor for concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16373385A JPS6224012A (en) 1985-07-23 1985-07-23 Anchor for concrete

Publications (1)

Publication Number Publication Date
JPS6224012A true JPS6224012A (en) 1987-02-02

Family

ID=15779634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16373385A Pending JPS6224012A (en) 1985-07-23 1985-07-23 Anchor for concrete

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193610A (en) * 1987-09-15 1989-04-12 Hilti Ag Expanding anchor
JP2017110477A (en) * 2015-12-19 2017-06-22 株式会社Seto Anchor bolt and installation method of the same
JP2020033699A (en) * 2018-08-27 2020-03-05 株式会社ケー・エフ・シー Attachment fitting structure and construction method for the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193610A (en) * 1987-09-15 1989-04-12 Hilti Ag Expanding anchor
JP2017110477A (en) * 2015-12-19 2017-06-22 株式会社Seto Anchor bolt and installation method of the same
JP2020033699A (en) * 2018-08-27 2020-03-05 株式会社ケー・エフ・シー Attachment fitting structure and construction method for the same

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