JP3211679U - Expansion anchor - Google Patents

Expansion anchor Download PDF

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Publication number
JP3211679U
JP3211679U JP2017002210U JP2017002210U JP3211679U JP 3211679 U JP3211679 U JP 3211679U JP 2017002210 U JP2017002210 U JP 2017002210U JP 2017002210 U JP2017002210 U JP 2017002210U JP 3211679 U JP3211679 U JP 3211679U
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main body
wall
core rod
hole
expansion anchor
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易攸 林
易攸 林
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易攸 林
易攸 林
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

【課題】ドリル穴に堅牢に固着することができる、ケミカルアンカー不要の拡張アンカーを提供する。【解決手段】ケミカルアンカー不要の拡張アンカーは本体２と、芯棒３と、ナット４とを備える。本体２の真ん中には貫通穴２０が設けられ、本体２の内壁と、本体２の外壁とにはねじ山２１、２２が設けられ、本体２の末部には切溝２３が設けられ、かつ隣接する２個の前記切溝の間に形成される弧形部２４の内壁は平滑な表面である。芯棒３は、本体２の貫通穴２０に螺設され、芯棒３の外壁にはねじ山３０が設けられ、芯棒３の末部にはテーパ部３１が設けられ、芯棒３の頂部には凸部３２が設けられる。テーパ部３１は最大直径が本体２の貫通穴２０の穴径より大きい。複数のナット４は、本体２と、芯棒３とのねじ山にそれぞれ螺設される。【選択図】図４An expansion anchor that can be firmly fixed to a drill hole and does not require a chemical anchor is provided. An expansion anchor that does not require a chemical anchor includes a main body 2, a core rod 3, and a nut 4. A through hole 20 is provided in the middle of the main body 2, threads 21 and 22 are provided on the inner wall of the main body 2 and the outer wall of the main body 2, and a kerf 23 is provided at the end of the main body 2, and The inner wall of the arcuate portion 24 formed between the two adjacent kerfs is a smooth surface. The core rod 3 is screwed into the through hole 20 of the main body 2, a screw thread 30 is provided on the outer wall of the core rod 3, a taper portion 31 is provided at the end of the core rod 3, and the top of the core rod 3. Is provided with a convex portion 32. The maximum diameter of the tapered portion 31 is larger than the diameter of the through hole 20 of the main body 2. The plurality of nuts 4 are respectively screwed on the threads of the main body 2 and the core rod 3. [Selection] Figure 4

Description

本考案は、拡張アンカーに関する。   The present invention relates to an expansion anchor.

一般的によく使われる差筋用拡張アンカーは、本体１と、ナットＮと、拡張部材１０を備えている（図１参照）。拡張部材１０を組み込んだ本体１をドリル穴Ａにはめ込んだ後、拡張部材１０上部のナットＮを工具で回すことにより、拡張部材１０下部のテーパ部を上昇させる。すると、テーパ部の先端部が本体１下部を押し、ドリル穴Ａの内壁を押し付けて固着させる。   A differential anchor expansion anchor that is often used generally includes a main body 1, a nut N, and an expansion member 10 (see FIG. 1). After the main body 1 incorporating the expansion member 10 is fitted in the drill hole A, the taper portion at the lower part of the expansion member 10 is raised by turning the nut N above the expansion member 10 with a tool. Then, the tip of the tapered portion presses the lower portion of the main body 1 and presses and fixes the inner wall of the drill hole A.

しかし、本体１は平滑な表面を有するため、外力が本体１とドリル穴Ａとの摩擦力より大きい場合、ドリル穴Ａから抜けてしまい、使用上において事故を引き起こす恐れがある。なお、壁面の厚さが足りず、本体１がドリル穴Ａに完全におさまることができない（図２参照）場合、本体１が使用できなくなる。   However, since the main body 1 has a smooth surface, if the external force is larger than the frictional force between the main body 1 and the drill hole A, the main body 1 may come out of the drill hole A and cause an accident in use. In addition, when the wall thickness is insufficient and the main body 1 cannot completely fit into the drill hole A (see FIG. 2), the main body 1 cannot be used.

上記の問題を解決するために、ドリル穴Ａにコーキング剤Ｂを直接注入してから、スタッドボルト１１を挿入する方法が開発されており、コーキング剤Ｂが硬化後、スタッドボルト１１をドリル穴Ａに係止させる（図３参照）ことができる。しかし、コーキング剤Ｂは温度の変化で硬化性が劣ってしまうことがあるため、スタッドボルト１１がドリル穴Ａから抜けてしまい、使用上には課題が残る。   In order to solve the above problems, a method has been developed in which the caulking agent B is directly injected into the drill hole A and then the stud bolt 11 is inserted. After the caulking agent B is cured, the stud bolt 11 is inserted into the drill hole A. (See FIG. 3). However, since the caulking agent B may be inferior in curability due to a change in temperature, the stud bolt 11 falls out of the drill hole A, and there remains a problem in use.

本考案は、ドリル穴に堅牢に固着することができる、ケミカルアンカー不要の拡張アンカーを提供することを目的とする。   An object of the present invention is to provide an expansion anchor that can be firmly fixed to a drill hole and does not require a chemical anchor.

本考案のケミカルアンカー不要の拡張アンカーは、軸方向に沿った貫通穴が中心に設けられる本体と、本体の貫通穴に設けられる芯棒と、複数のナットと、を備える。本体の外壁と、本体の内壁とにはねじ山が設けられ、本体の末部には複数の切溝が設けられ、隣接する２個の前記切溝の間に形成される弧形部の内壁の表面は平滑であり、芯棒の外壁にはねじ山が設けられ、芯棒の末部にはテーパ部が設けられ、かつ頂部には凸部が設けられ、複数のナットは本体の外壁に設けられたねじ山と、芯棒の外壁に設けられたねじ山とにそれぞれ設けられることを特徴としている。   An expansion anchor that does not require a chemical anchor according to the present invention includes a main body provided with a through hole in the center in the axial direction, a core bar provided in the through hole of the main body, and a plurality of nuts. The outer wall of the main body and the inner wall of the main body are provided with a screw thread, the end of the main body is provided with a plurality of kerfs, and the inner wall of the arc-shaped part formed between two adjacent kerfs The surface of the core rod is smooth, the outer wall of the core rod is provided with a screw thread, the end of the core rod is provided with a taper portion, the top portion is provided with a convex portion, and a plurality of nuts are provided on the outer wall of the main body. It is characterized by being provided respectively on the provided thread and the thread provided on the outer wall of the core rod.

公知の差筋用拡張アンカーの使用方法を示す断面図である。It is sectional drawing which shows the usage method of a well-known expansion anchor for differential muscles. 公知の差筋用拡張アンカーの使用方法を示す説明図である。It is explanatory drawing which shows the usage method of a well-known expansion | extension anchor for differential muscles. もう一つの公知の差筋用拡張アンカーの使用方法を示す断面図である。It is sectional drawing which shows the usage method of another well-known expansion anchor for differential muscles. 本考案の第１実施形態に係る拡張アンカーの分解斜視図である。1 is an exploded perspective view of an expansion anchor according to a first embodiment of the present invention. 本考案の第１実施形態に係るナット未組込の拡張アンカーの組立斜視図である。It is an assembly perspective view of the expansion anchor which has not built in the nut concerning a 1st embodiment of the present invention. 本考案の第１実施形態に係る拡張アンカーの使用方法を示す断面図（一）である。It is sectional drawing (1) which shows the usage method of the expansion anchor which concerns on 1st Embodiment of this invention. 本考案の第１実施形態に係る拡張アンカーの使用方法を示す断面図（二）である。It is sectional drawing (2) which shows the usage method of the expansion anchor which concerns on 1st Embodiment of this invention. 本考案の第２実施形態に係る拡張アンカーの斜視図である。It is a perspective view of an expansion anchor concerning a 2nd embodiment of the present invention. 本考案の第２実施形態に係る拡張アンカーの使用方法を示す断面図である。It is sectional drawing which shows the usage method of the expansion anchor which concerns on 2nd Embodiment of this invention. 本考案の第３実施形態に係る拡張アンカーの分解斜視図である。It is a disassembled perspective view of the expansion anchor which concerns on 3rd Embodiment of this invention. 本考案の第３実施形態に係る拡張アンカーの使用方法を示す断面図である。It is sectional drawing which shows the usage method of the expansion anchor which concerns on 3rd Embodiment of this invention. 本考案の第４実施形態に係る拡張アンカーの分解斜視図である。It is a disassembled perspective view of the expansion anchor which concerns on 4th Embodiment of this invention. 本考案の第４実施形態に係る拡張アンカーの組立斜視図である。It is an assembly perspective view of an expansion anchor concerning a 4th embodiment of the present invention. 本考案の第４実施形態に係る拡張アンカーの使用方法を示す断面図（一）である。It is sectional drawing (1) which shows the usage method of the expansion anchor which concerns on 4th Embodiment of this invention. 本考案の第４実施形態に係る拡張アンカーの使用方法を示す断面図（二）である。It is sectional drawing (2) which shows the usage method of the expansion anchor which concerns on 4th Embodiment of this invention. 本考案の第４実施形態に係る拡張アンカーの使用方法を示す断面図（三）である。It is sectional drawing (3) which shows the usage method of the expansion anchor which concerns on 4th Embodiment of this invention.

（第１実施形態）
本考案の実施形態による拡張アンカーを図面に基づいて説明する。図４から図７に示す。本考案の第１実施形態による拡張アンカーは、主として本体２と、芯棒３と、複数のナット４とからなる。本体２には軸方向に沿った貫通穴２０が中心に設けられる。本体２の内壁と、本体の外壁とにはねじ山２１、２２が設けられ、本体２の末部には複数の切溝２３が設けられる。切溝２３は長さが最低５センチであるため、比較的に広く展開してかみ合う面ができる。隣接する切溝２３同士の間には複数の弧形部２４が形成され、弧形部２４は内壁の表面は平滑であり、かつ底部の開口先端にはテーパ傾斜面２４０が設けられる。芯棒３は、本体２の貫通穴２０内を通して設置され、外壁にはねじ山３０が設けられ、末部にはテーパ部３１が設けられ、かつ頂部には凸部３２が設けられる。凸部３２は六角形または十二角形のいずれでも良い。テーパ部３１は直径が貫通穴２０の直径より大きい。複数のナット４は、本体２と、芯棒３とのねじ山２２、３０に螺設される。 (First embodiment)
An expansion anchor according to an embodiment of the present invention will be described with reference to the drawings. It is shown in FIGS. The expansion anchor according to the first embodiment of the present invention mainly includes a main body 2, a core rod 3, and a plurality of nuts 4. The main body 2 is provided with a through hole 20 in the center along the axial direction. Screw threads 21 and 22 are provided on the inner wall of the main body 2 and the outer wall of the main body 2, and a plurality of kerfs 23 are provided at the end of the main body 2. Since the kerf 23 is at least 5 centimeters long, it has a relatively wide unfolded surface. A plurality of arc-shaped portions 24 are formed between the adjacent kerfs 23, the arc-shaped portion 24 has a smooth inner wall surface, and a tapered inclined surface 240 is provided at the opening tip of the bottom portion. The core rod 3 is installed through the through hole 20 of the main body 2, a screw thread 30 is provided on the outer wall, a tapered portion 31 is provided at the end, and a convex portion 32 is provided at the top. The convex part 32 may be hexagonal or dodecagonal. The diameter of the tapered portion 31 is larger than the diameter of the through hole 20. The plurality of nuts 4 are screwed to the threads 22 and 30 between the main body 2 and the core rod 3.

使用時は、芯棒３を組み込んだ本体２をドリル穴Ａに適切な位置まで回転挿入し、本体２にあるナット４の底部を平面に係合させた（図６参照）後、工具（図の表示無し）で芯棒３上部の凸部３２を回して芯棒３を上昇させる（図７参照）。芯棒３のテーパ部３１が徐々に本体２下部の貫通穴２０に入っていく際に、弧形部２４はテーパ部３１の先端部に押されて外に拡張し、弧形部２４のおねじ山をドリル穴Ａの内壁に確実にかみ合わせる。この際、本体２はドリル穴Ａに完全に固着されるため、この後ナット４を芯棒３に螺設して固着させる。弧形部２４の展開した直径はドリル穴Ａの直径よりはるかに長いため、本体２が引っ張り出されることが無い。   At the time of use, the main body 2 incorporating the core rod 3 is rotationally inserted into the drill hole A to an appropriate position, and the bottom of the nut 4 in the main body 2 is engaged with a flat surface (see FIG. 6). ), The protrusion 32 at the top of the core 3 is turned to raise the core 3 (see FIG. 7). When the tapered portion 31 of the core rod 3 gradually enters the through hole 20 at the lower portion of the main body 2, the arc-shaped portion 24 is pushed outward by the tip end portion of the tapered portion 31 and expands outward. Securely engage the thread with the inner wall of the drill hole A. At this time, since the main body 2 is completely fixed to the drill hole A, the nut 4 is then screwed to the core rod 3 and fixed. Since the developed diameter of the arc-shaped portion 24 is much longer than the diameter of the drill hole A, the main body 2 is not pulled out.

（第２実施形態）
図８と図９とに示す本考案の第２実施形態による拡張アンカーは、主として本体２と、芯棒５と、複数のナット４とからなる。本体２には軸方向に沿った貫通穴２０が中心に設けられ、本体２の内壁と、外壁とにはねじ山２１、２２が設けられ、本体２の末部には複数の切溝２３が設けられ、切溝２３と切溝２３との間には複数の弧形部２４が形成され、弧形部２４は内壁の表面は平滑であり、かつ底部の開口先端にはテーパ傾斜面２４０が設けられる。芯棒５は、本体２の貫通穴２０内を通して設置され、外壁にはねじ山５０が設けられ、頂部には凸部５２が設けられる。凸部５２は六角形または十二角形のいずれでも良い。芯棒５の末部にはテーパヘッド５１が螺設され、テーパヘッド５１は中心にねじ穴５１０を設けてなり、芯棒５を螺設して結合することができる。テーパヘッド５１は直径が貫通穴２０の直径より大きい。複数のナット４は、本体２と、芯棒５とのねじ山２２、５０に螺設される。 (Second Embodiment)
The expansion anchor according to the second embodiment of the present invention shown in FIGS. 8 and 9 mainly includes a main body 2, a core rod 5, and a plurality of nuts 4. The main body 2 is provided with a through hole 20 along the axial direction in the center, the inner wall and the outer wall of the main body 2 are provided with threads 21 and 22, and a plurality of kerfs 23 are formed at the end of the main body 2. A plurality of arc-shaped portions 24 are formed between the kerf 23 and the kerf 23, the arc-shaped portion 24 has a smooth inner wall surface, and a tapered inclined surface 240 at the tip of the bottom opening. Provided. The core rod 5 is installed through the through hole 20 of the main body 2, a screw thread 50 is provided on the outer wall, and a convex portion 52 is provided on the top. The convex portion 52 may be either a hexagon or a dodecagon. A taper head 51 is screwed at the end of the core rod 5, and the taper head 51 is provided with a screw hole 510 at the center, and the core rod 5 can be screwed and coupled. The diameter of the taper head 51 is larger than the diameter of the through hole 20. The plurality of nuts 4 are screwed to the threads 22 and 50 between the main body 2 and the core rod 5.

使用時は、工具で芯棒５上部の凸部５２を回すだけで、テーパヘッド５１を上昇させてその先端部でドリル穴Ａの内壁に押してはめ込ませ、固着させる目的を達することができる。   At the time of use, the purpose of fixing the taper head 51 by raising the taper head 51 and pushing it into the inner wall of the drill hole A by simply turning the convex portion 52 at the top of the core rod 5 with a tool can be achieved.

（第３実施形態）
図１０と図１１とに示す本考案の第３実施形態による拡張アンカーは、主として本体２と、芯棒３と、複数のナット４とからなる。本体２には軸方向に沿った貫通穴２０が中心に設けられ、本体２の外壁にはねじ山２２が設けられ、本体２の末部には複数の切溝２３が設けられ、かつ切溝２３と切溝２３との間には複数の弧形部２４が形成され、弧形部２４は内壁の表面は平滑であり、かつ底部の開口先端にはテーパ傾斜面２４０が設けられる。芯棒３は、本体２の貫通穴２０内を通して設置され、外壁にはねじ山３０が設けられ、末部にはテーパ部３１が設けられる。テーパ部３１は直径が貫通穴２０の直径より大きい。複数のナット４は、本体２と、芯棒３とのねじ山２２、３０に螺設される。 (Third embodiment)
The expansion anchor according to the third embodiment of the present invention shown in FIGS. 10 and 11 mainly includes a main body 2, a core rod 3, and a plurality of nuts 4. The main body 2 is provided with a through hole 20 along the axial direction at the center, the outer wall of the main body 2 is provided with a thread 22, a plurality of kerfs 23 are provided at the end of the main body 2, and the kerfs A plurality of arc-shaped portions 24 are formed between the groove 23 and the kerf 23, the arc-shaped portion 24 has a smooth inner wall surface, and a tapered inclined surface 240 is provided at the opening tip of the bottom portion. The core rod 3 is installed through the through-hole 20 of the main body 2, a screw thread 30 is provided on the outer wall, and a tapered portion 31 is provided at the end. The diameter of the tapered portion 31 is larger than the diameter of the through hole 20. The plurality of nuts 4 are screwed to the threads 22 and 30 between the main body 2 and the core rod 3.

（第４実施形態）
図１２から図１６に示す本考案の第４実施形態による拡張アンカーは、主として本体６と、芯棒７と、ナット４とからなる。本体６には軸方向に沿った貫通穴６０が中心に設けられ、本体６の外壁にはねじ山６１が設けられ、本体６の末部には複数の切溝６２と、弧形部６３が設けられ、本体６は貫通穴６０底部にテーパ傾斜面６４を設けてなる。芯棒７は、本体６の貫通穴６０内を通して設置され、外壁にはねじ山７０が設けられ、頂部には回転部７１が設けられる。芯棒７の末端にはテーパヘッド７２が螺設され、テーパヘッド７２の中心にはねじ穴７２０が設けられ、テーパヘッド７２の前段にはテーパ面７２１が設けられ、さらにテーパ面７２１には粗面７２１０が設けられる。ねじ穴７２０は芯棒７を螺設して結合することができる。テーパヘッド７２は直径が本体６の貫通穴６０の直径より大きい。ナット４は、本体６のねじ山６１に螺設される。 (Fourth embodiment)
The expansion anchor according to the fourth embodiment of the present invention shown in FIGS. 12 to 16 mainly includes a main body 6, a core rod 7, and a nut 4. The main body 6 is provided with a through hole 60 in the axial direction in the center, the outer wall of the main body 6 is provided with a thread 61, and a plurality of kerfs 62 and an arc-shaped portion 63 are provided at the end of the main body 6. The main body 6 is provided with a tapered inclined surface 64 at the bottom of the through hole 60. The core rod 7 is installed through the through hole 60 of the main body 6, a screw thread 70 is provided on the outer wall, and a rotating portion 71 is provided on the top. A taper head 72 is screwed at the end of the core rod 7, a screw hole 720 is provided at the center of the taper head 72, a taper surface 721 is provided at the front stage of the taper head 72, and the taper surface 721 is roughened. A surface 7210 is provided. The screw hole 720 can be coupled by screwing the core rod 7. The diameter of the taper head 72 is larger than the diameter of the through hole 60 of the main body 6. The nut 4 is screwed to the thread 61 of the main body 6.

使用時は、芯棒７を組み込んだ本体６をドリル穴Ａに適切な位置まで回転挿入し、ナット４の底部を平面に係合させた（図１４参照）後、工具（図の表示無し）で芯棒７上部の回転部７１を回して下部のテーパヘッド７２を上昇させる。テーパヘッド７２にあるテーパ面７２１には粗面７２１０が設けられるため、テーパヘッド７２は本体６のテーパ傾斜面６４にかみ合い、回転せずに上昇するだけとなる（図１５参照）。したがって、芯棒７のテーパヘッド７２が本体６下部にある貫通穴６０に徐々に入っていく際に、テーパ傾斜面６４はテーパヘッド７２の先端部に押されて外に拡張し、弧形部６３のおねじ山をドリル穴Ａの内壁に確実にかみ合わせる。この際、本体６がドリル穴Ａに完全に固着される。芯棒７は下部のテーパヘッド７２を引き上げるため、芯棒７の回転部７１が上昇して表面より突起することが無い。したがって、回転部７１が突起せずに全体を固着させることができる。   In use, the main body 6 incorporating the core rod 7 is rotationally inserted into the drill hole A to an appropriate position, and the bottom of the nut 4 is engaged with a flat surface (see FIG. 14), and then a tool (not shown) Then, the rotating part 71 on the upper part of the core rod 7 is rotated to raise the lower taper head 72. Since the rough surface 7210 is provided on the taper surface 721 of the taper head 72, the taper head 72 is engaged with the taper inclined surface 64 of the main body 6 and only rises without rotating (see FIG. 15). Therefore, when the taper head 72 of the core rod 7 gradually enters the through hole 60 in the lower portion of the main body 6, the taper inclined surface 64 is pushed outward by the tip portion of the taper head 72 and expands outward. Securely engage 63 male threads with the inner wall of the drill hole A. At this time, the main body 6 is completely fixed to the drill hole A. Since the core rod 7 pulls up the lower taper head 72, the rotating portion 71 of the core rod 7 does not rise and protrude from the surface. Accordingly, the entire rotating portion 71 can be fixed without protruding.

１ 本体
１０ 拡張部材
１１ スタッドボルト
２ 本体
２０ 貫通穴
２１ ねじ山
２２ ねじ山
２３ 切溝
２４ 弧形部
２４０ テーパ傾斜面
３ 芯棒
３０ ねじ山
３１ テーパ部
３２ 凸部
４ ナット
５ 芯棒
５０ ねじ山
５１ テーパヘッド
５１０ ねじ穴
５２ 凸部
６ 本体
６０ 貫通穴
６１ ねじ山
６２ 切溝
６３ 弧形部
６４ テーパ傾斜面
７ 芯棒
７０ ねじ山
７１ 回転部
７２ テーパヘッド
７２０ ねじ穴
７２１ テーパ面
７２１０ 粗面
Ａ ドリル穴
Ｂ コーキング剤
Ｎ ナット DESCRIPTION OF SYMBOLS 1 Main body 10 Expansion member 11 Stud bolt 2 Main body 20 Through-hole 21 Thread 22 Thread 23 Cut groove 24 Arc-shaped part 240 Tapered inclined surface 3 Core rod 30 Thread 31 Tapered part 32 Convex part 4 Nut 5 Core bar 50 Thread 51 Tapered head 510 Screw hole 52 Convex part 6 Main body 60 Through hole 61 Screw thread 62 Cut groove 63 Arc shaped part 64 Tapered inclined surface 7 Core rod 70 Screw thread 71 Rotating part 72 Taper head 720 Screw hole 721 Tapered surface 7210 Rough surface A Drill hole B Caulking agent N Nut

Claims (8)

軸方向に沿った貫通穴が中心に設けられる本体と、前記本体の貫通穴に設けられる芯棒と、複数のナットとを備える、ケミカルアンカー不要の拡張アンカーであって、
前記本体の外壁と、前記本体の内壁とにはねじ山が設けられ、かつ前記本体の末部には複数の切溝が設けられ、隣接する２個の前記切溝の間に形成される弧形部の内壁の表面は平滑であり、
前記芯棒の外壁にはねじ山が設けられ、前記芯棒の末部にはテーパ部が設けられ、かつ前記芯棒の頂部には凸部が設けられ、
複数のナットは、前記本体の外壁に設けられたねじ山と、前記芯棒の外壁に設けられたねじ山とにそれぞれ設けられることを特徴とする、拡張アンカー。 A chemical anchor unnecessary expansion anchor comprising a main body provided with a through hole along the axial direction in the center, a core bar provided in the through hole of the main body, and a plurality of nuts,
The outer wall of the main body and the inner wall of the main body are provided with a thread, and a plurality of kerfs are provided at the end of the main body, and an arc formed between two adjacent kerfs. The surface of the inner wall of the shape part is smooth,
A thread is provided on the outer wall of the core rod, a tapered portion is provided at the end of the core rod, and a convex portion is provided at the top of the core rod,
The plurality of nuts are respectively provided on a screw thread provided on an outer wall of the main body and a screw thread provided on an outer wall of the core rod. 前記本体の末部の内壁がテーパ傾斜面であることを特徴とする、請求項１に記載の拡張アンカー。   The expansion anchor according to claim 1, wherein the inner wall at the end of the main body is a tapered inclined surface. 前記芯棒のテーパ部の直径は、前記貫通穴の直径より大きいことを特徴とする、請求項１に記載の拡張アンカー。   The expansion anchor according to claim 1, wherein a diameter of the tapered portion of the core rod is larger than a diameter of the through hole. 前記芯棒にある凸部が六角形であることを特徴とする、請求項１に記載の拡張アンカー。   The expansion anchor according to claim 1, wherein the convex portion on the core rod is hexagonal. 前記芯棒にある凸部が十二角形であることを特徴とする、請求項１に記載の拡張アンカー。   The expansion anchor according to claim 1, wherein the convex portion on the core rod is a dodecagon. 軸方向に沿った貫通穴が中心に設けられる本体と、前記本体の貫通穴に設けられる芯棒と、複数のナットとからなる、ケミカルアンカー不要の拡張アンカーであって、
前記本体の外壁にはねじ山が設けられ、かつ前記本体の末部には複数の切溝が設けられ、隣接する２個の前記切溝の間に形成される弧形部の内壁の表面は平滑であり、
前記芯棒の外壁にはねじ山が設けられ、前記芯棒の末部にはテーパヘッドが螺設され、かつ前記テーパヘッドは中心にねじ穴を設けてなり、前記芯棒を螺設して結合することができ、
前記複数のナットは、前記本体の外壁に設けられたねじ山と、前記芯棒の外壁に設けられたねじ山とにそれぞれ設けられることを特徴とする、拡張アンカー。 An expansion anchor without a chemical anchor, comprising a main body provided with a through hole along the axial direction in the center, a core bar provided in the through hole of the main body, and a plurality of nuts,
The outer wall of the main body is provided with a thread, and the end of the main body is provided with a plurality of kerfs, and the surface of the inner wall of the arc-shaped part formed between two adjacent kerfs is Is smooth,
A thread is provided on the outer wall of the core rod, a taper head is screwed at the end of the core rod, and the taper head is provided with a screw hole at the center, and the core rod is screwed. Can be combined,
The expansion anchor according to claim 1, wherein the plurality of nuts are respectively provided on a screw thread provided on an outer wall of the main body and a screw thread provided on an outer wall of the core rod. 前記本体の末部の内壁がテーパ傾斜面であることを特徴とする、請求項６に記載の拡張アンカー。   The expansion anchor according to claim 6, wherein the inner wall at the end of the main body is a tapered inclined surface. 軸方向に沿った貫通穴が中心に設けられる本体と、前記本体の貫通穴に設けられる芯棒と、ナットとを備える、ケミカルアンカー不要の拡張アンカーであって、
前記本体の外壁にはねじ山が設けられ、かつ前記本体の末部には複数の切溝が設けられ、隣接する２個の前記切溝の間に形成される弧形部の内壁の表面は平滑であり、
前記芯棒の外壁にはねじ山が設けられ、前記芯棒の頂部には回転部が設けられ、かつ前記芯棒の末部にはテーパヘッドが螺設され、前記テーパヘッドは中心にねじ穴を設けてなり、前記芯棒を螺設して結合することができ、前記テーパヘッドはテーパ面に粗面が設けられ、
前記ナットは、前記本体の外壁に設けられたねじ山に設けられることを特徴とする、拡張アンカー。 An expansion anchor without a chemical anchor, comprising a main body provided with a through hole along the axial direction in the center, a core bar provided in the through hole of the main body, and a nut,
The outer wall of the main body is provided with a thread, and the end of the main body is provided with a plurality of kerfs, and the surface of the inner wall of the arc-shaped part formed between two adjacent kerfs is Is smooth,
A screw thread is provided on the outer wall of the core rod, a rotating portion is provided at the top of the core rod, and a taper head is screwed at the end of the core rod, and the taper head has a screw hole at the center. Can be coupled by screwing the core rod, the taper head has a rough surface on the taper surface,
The expansion anchor according to claim 1, wherein the nut is provided on a screw thread provided on an outer wall of the main body.
JP2017002210U 2016-05-27 2017-05-18 Expansion anchor Expired - Fee Related JP3211679U (en)

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