JP6895691B2 - Board anchor - Google Patents

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JP6895691B2
JP6895691B2 JP2019195247A JP2019195247A JP6895691B2 JP 6895691 B2 JP6895691 B2 JP 6895691B2 JP 2019195247 A JP2019195247 A JP 2019195247A JP 2019195247 A JP2019195247 A JP 2019195247A JP 6895691 B2 JP6895691 B2 JP 6895691B2
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terminal
screw
tapping screw
board anchor
protruding portion
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佐藤　明
佐藤　　明
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横浜空調株式会社
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Description

本発明は、ボードアンカーに関する。 The present invention relates to a board anchor.

石膏ボードなどの脆い材質のボードに取付物をネジで固定する際に、ボードアンカーが用いられている。石膏ボードに打ち込まれたボードアンカーにタッピングネジをねじ込むことで、ボードアンカーの２つの端子の先端部が、石膏ボード内や、石膏ボード裏の空間で拡開し、取付物とボードアンカーが石膏ボードに固定される。 Board anchors are used to screw attachments to boards made of brittle materials such as gypsum board. By screwing the tapping screw into the board anchor driven into the gypsum board, the tips of the two terminals of the board anchor expand in the gypsum board and in the space behind the gypsum board, and the attachment and the board anchor are the gypsum board. Is fixed to.

特許第３９３３１７８号公報Japanese Patent No. 3933178

本発明は、信頼性の高いボード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 a highly reliable board anchor.

本発明の一態様によれば、ボードアンカーは、板状の第１端子と、前記第１端子と重ね合わされた板状の第２端子と、を有し、前記第１端子と前記第２端子との間のネジ挿入部にタッピングネジがねじ込まれることで、前記第１端子および前記第２端子が互いに離間するように拡開する。前記第１端子と前記第２端子とが重ね合わされ、前記第１端子と前記第２端子との合計板厚をもつ部分における前記ネジ挿入部を挟んで位置し前記ネジ挿入部に隣接する面に、前記タッピングネジのネジ山が嵌合する雌ねじを形成する複数のネジ受け溝が、前記ネジ山のピッチ及びネジ山形状に合わせて設けられている。


According to one aspect of the present invention, the board anchor has a plate-shaped first terminal and a plate-shaped second terminal superposed on the first terminal, and the first terminal and the second terminal. By screwing the tapping screw into the screw insertion portion between the first terminal and the second terminal, the first terminal and the second terminal are widened so as to be separated from each other. The first terminal and the second terminal are overlapped with each other, and are located on a surface adjacent to the screw insertion portion at a portion having a total plate thickness of the first terminal and the second terminal so as to sandwich the screw insertion portion. A plurality of screw receiving grooves forming a female screw into which the screw thread of the tapping screw is fitted are provided according to the pitch and thread shape of the screw thread.

本発明によれば、信頼性の高いボードアンカーを提供することができる。 According to the present invention, it is possible to provide a highly reliable board anchor.

本発明の実施形態のボードアンカーの斜視図である。It is a perspective view of the board anchor of the embodiment of this invention. （ａ）は本発明の実施形態のボードアンカーの正面図であり、（ｂ）は図２（ａ）におけるＡ方向から見た側面図である。(A) is a front view of the board anchor according to the embodiment of the present invention, and (b) is a side view of FIG. 2 (a) as viewed from the A direction. 本発明の実施形態のボードアンカーの加工前の展開図である。It is a development view before processing of the board anchor of embodiment of this invention. 本発明の実施形態のボードアンカーと、タッピングネジとの結合部分の拡大模式図である。It is an enlarged schematic view of the joint portion between the board anchor of the embodiment of this invention and a tapping screw. （ａ）は本発明の実施形態のボードアンカーおよびタッピングネジの石膏ボードへの取付状態を示す断面図であり、（ｂ）は図５（ａ）の下面図である。(A) is a cross-sectional view showing a state in which a board anchor and a tapping screw according to an embodiment of the present invention are attached to a gypsum board, and (b) is a bottom view of FIG. 5 (a).

以下、図面を参照し、実施形態について説明する。なお、各図面中、同じ要素には同じ符号を付している。 Hereinafter, embodiments will be described with reference to the drawings. In each drawing, the same elements are designated by the same reference numerals.

図１は、本発明の実施形態のボードアンカー１の斜視図である。
図２（ａ）はボードアンカー１の正面図であり、図２（ｂ）は図２（ａ）におけるＡ方向から見た側面図である。 FIG. 1 is a perspective view of the board anchor 1 according to the embodiment of the present invention.
FIG. 2A is a front view of the board anchor 1, and FIG. 2B is a side view of FIG. 2A as viewed from the A direction.

ボードアンカー１は、板状の第１端子１１と、第１端子１１と重ね合わされた板状の第２端子１２と、を有し、第１端子１１と第２端子１２との間にタッピングネジがねじ込まれることで、第１端子１１および第２端子１２が互いに離間するように拡開する。 The board anchor 1 has a plate-shaped first terminal 11 and a plate-shaped second terminal 12 overlapped with the first terminal 11, and a tapping screw is provided between the first terminal 11 and the second terminal 12. Is screwed in so that the first terminal 11 and the second terminal 12 are widened so as to be separated from each other.

図３は、ボードアンカー１の加工前の展開図である。 FIG. 3 is a developed view of the board anchor 1 before processing.

実施形態のボードアンカー１は、図３に示す金属（例えば冷間圧延鋼板）の板状部材を加工して得られる。 The board anchor 1 of the embodiment is obtained by processing a plate-shaped member of a metal (for example, a cold-rolled steel plate) shown in FIG.

図３に示すように、第１端子１１と第２端子１２は、連結部１７を介して一体につながって形成され、その連結部１７が折り曲げられることで、第１端子１１と第２端子１２とは互いに重ね合わされる。例えば、図３において右側に位置する第１端子１１が紙面奥側に折り返され、第２端子１２に重ね合わされる。 As shown in FIG. 3, the first terminal 11 and the second terminal 12 are formed by being integrally connected via a connecting portion 17, and when the connecting portion 17 is bent, the first terminal 11 and the second terminal 12 are formed. Are superimposed on each other. For example, the first terminal 11 located on the right side in FIG. 3 is folded back to the back side of the paper surface and overlapped with the second terminal 12.

第１端子１１と第２端子１２とが重ねられた状態で、第１端子１１の側縁部に設けられた突出片１８が折り曲げられ、図１に示すように、互いに重ねられた第１端子１１の側縁部および第２端子１２の側縁部を挟み込むように、第２端子１２に係合される。 In a state where the first terminal 11 and the second terminal 12 are overlapped with each other, the protruding pieces 18 provided on the side edges of the first terminal 11 are bent, and as shown in FIG. 1, the first terminals overlapped with each other. It is engaged with the second terminal 12 so as to sandwich the side edge portion of the 11 and the side edge portion of the second terminal 12.

第１端子１１および第２端子１２において連結部１７によって連結された部分、および突出片１８によってクランプされた部分は、タッピングネジの挿入を受けても拡開せず、重ね合わされた状態が保持される固定部４１、４２となる。第１端子１１および第２端子１２において、固定部４１、４２よりも下方の部分（先端部６１、６２を含む部分）が拡開可能となる。 The portion of the first terminal 11 and the second terminal 12 connected by the connecting portion 17 and the portion clamped by the protruding piece 18 do not expand even when the tapping screw is inserted, and the overlapped state is maintained. The fixing portions 41 and 42 are formed. In the first terminal 11 and the second terminal 12, the portion below the fixed portions 41 and 42 (the portion including the tip portions 61 and 62) can be expanded.

図３に示す状態において、第１端子１１と第２端子１２のそれぞれは半円状の頭部２３、２４を有する。第１端子１１と第２端子１２が重ね合わされると、図１に示すように、それぞれの頭部２３、２４は外側に向けて折り曲げられる。折り曲げられた２つの頭部２３、２４が組み合わさって、その内側に円形の開口２５が形成される。その開口２５の下方には、ネジ挿入部２６が確保される。 In the state shown in FIG. 3, each of the first terminal 11 and the second terminal 12 has semicircular heads 23 and 24. When the first terminal 11 and the second terminal 12 are overlapped with each other, the heads 23 and 24, respectively, are bent outward as shown in FIG. The two bent heads 23, 24 are combined to form a circular opening 25 inside. A screw insertion portion 26 is secured below the opening 25.

第１端子１１の先端部６１および第２端子１２の先端部６２は、鋭角状に形成され、第２端子１２の先端部６２は第１端子１１の先端部６１よりも突出している。したがって、第２端子１２の先端部６２のみが先に石膏ボードに打ち込まれる。これにより、より小さな力でボードアンカー１を石膏ボードに打ち込みやすくできる。 The tip 61 of the first terminal 11 and the tip 62 of the second terminal 12 are formed at an acute angle, and the tip 62 of the second terminal 12 protrudes from the tip 61 of the first terminal 11. Therefore, only the tip portion 62 of the second terminal 12 is driven into the gypsum board first. As a result, the board anchor 1 can be easily driven into the gypsum board with a smaller force.

前述したように、第１端子１１と第２端子１２とが重ね合わされた部分は、タッピングネジの挿入を受けても拡開しない固定部４１、４２を有する。図２（ａ）に示す正面図において、第１固定部４１と第２固定部４２が、ネジ挿入部２６をＸ方向に挟んで位置している。第１固定部４１および第２固定部４２のそれぞれは、第１端子１１と第２端子１２とが重ね合わされた部分である。 As described above, the portion where the first terminal 11 and the second terminal 12 are overlapped with each other has fixing portions 41 and 42 that do not expand even when the tapping screw is inserted. In the front view shown in FIG. 2A, the first fixing portion 41 and the second fixing portion 42 are located so as to sandwich the screw insertion portion 26 in the X direction. Each of the first fixing portion 41 and the second fixing portion 42 is a portion in which the first terminal 11 and the second terminal 12 are overlapped.

Ｘ方向は、第１端子１１および第２端子１２の幅方向に対応する。第１端子１１と第２端子１１は、図２（ｂ）に示すように、Ｙ方向において重なっている。Ｙ方向は、Ｘ方向に直交する。Ｚ方向は、Ｘ方向およびＹ方向に直交し、タッピングネジが挿入される方向に対応する。 The X direction corresponds to the width direction of the first terminal 11 and the second terminal 12. As shown in FIG. 2B, the first terminal 11 and the second terminal 11 overlap each other in the Y direction. The Y direction is orthogonal to the X direction. The Z direction is orthogonal to the X and Y directions and corresponds to the direction in which the tapping screw is inserted.

図２（ａ）に示すように、第１固定部４１および第２固定部４２におけるネジ挿入部２６に隣接する部分に、複数のネジ受け溝３１が設けられている。タッピングネジのネジ山に合致したネジ受け溝３１が形成されている。第１固定部４１と第２固定部４２のそれぞれに、ネジ受け溝３１が形成されている。第１固定部４１に形成されたネジ受け溝３１のＺ方向の位置と、第２固定部４２に形成されたネジ受け溝３１のＺ方向の位置は、タッピングネジのネジ山ピッチに合致している。 As shown in FIG. 2A, a plurality of screw receiving grooves 31 are provided in the first fixing portion 41 and the second fixing portion 42 adjacent to the screw inserting portion 26. A screw receiving groove 31 that matches the thread of the tapping screw is formed. A screw receiving groove 31 is formed in each of the first fixing portion 41 and the second fixing portion 42. The Z-direction position of the screw receiving groove 31 formed in the first fixing portion 41 and the Z-direction position of the screw receiving groove 31 formed in the second fixing portion 42 match the screw thread pitch of the tapping screw. There is.

図４は、ボードアンカー１とタッピングネジ１００との結合部分の拡大模式図である。 FIG. 4 is an enlarged schematic view of a joint portion between the board anchor 1 and the tapping screw 100.

複数のネジ受け溝３１が、タッピングネジ１００のネジ山１０１のピッチ及びネジ山形状に合致して設けられている。すなわち、複数のネジ受け溝３１のＺ方向のピッチは、タッピングネジ１００のネジ山１０１のピッチに合致する。 A plurality of screw receiving grooves 31 are provided so as to match the pitch and thread shape of the thread 101 of the tapping screw 100. That is, the pitch of the plurality of screw receiving grooves 31 in the Z direction matches the pitch of the thread 101 of the tapping screw 100.

図２（ａ）および図４に示すように、Ｚ方向（タッピングネジ１００の軸方向）において隣り合うネジ受け溝３１の間に、ガイドリブ２１、２２が設けられている。第１端子１１には、第１固定部４１と第２固定部４２との間をつなぐように例えば２本のガイドリブ２１が設けられ、第２端子１２にも、第１固定部４１と第２固定部４２との間をつなぐように例えば２本のガイドリブ２２が設けられている。ガイドリブ２１とガイドリブ２２は、互いに交差している。 As shown in FIGS. 2A and 4, guide ribs 21 and 22 are provided between the screw receiving grooves 31 adjacent to each other in the Z direction (axial direction of the tapping screw 100). The first terminal 11 is provided with, for example, two guide ribs 21 so as to connect the first fixing portion 41 and the second fixing portion 42, and the second terminal 12 also has the first fixing portion 41 and the second fixing portion 41. For example, two guide ribs 22 are provided so as to connect the fixed portion 42. The guide rib 21 and the guide rib 22 intersect with each other.

第１端子１１に設けられたガイドリブ２１は、タッピングネジの軸径に沿って湾曲し、第２端子１２に設けられたガイドリブ２２は、タッピングネジの軸径に沿って湾曲している。 The guide rib 21 provided on the first terminal 11 is curved along the shaft diameter of the tapping screw, and the guide rib 22 provided on the second terminal 12 is curved along the shaft diameter of the tapping screw.

ネジ挿入部２６の下方には、第１突出部１４と第２突出部１６が設けられている。 A first protruding portion 14 and a second protruding portion 16 are provided below the screw insertion portion 26.

図３に示すように、加工前の状態において、第１突出部１４は、第１端子１１に形成された開口１３をＸ方向に分断する矩形状に設けられ、第２突出部１６は、第２端子１２に形成された開口１５をＸ方向に分断する矩形状に設けられている。 As shown in FIG. 3, in the state before processing, the first protruding portion 14 is provided in a rectangular shape that divides the opening 13 formed in the first terminal 11 in the X direction, and the second protruding portion 16 is the second The opening 15 formed in the two terminals 12 is provided in a rectangular shape that divides the opening 15 in the X direction.

それら矩形状の第１突出部１４と第２突出部１６のそれぞれは、図１および図２（ｂ）に示すように曲げ加工される。 Each of the rectangular first protruding portion 14 and the second protruding portion 16 is bent as shown in FIGS. 1 and 2 (b).

すなわち、第１端子１１に設けられた第１突出部１４は第２端子１２に向かって突出し、第２端子１２に形成された開口１５から第２端子１２の外側に突き抜ける。第２端子１２に設けられた第２突出部１６は第１端子１１に向かって突出し、第１端子１１に形成された開口１３から第１端子１１の外側に突き抜ける。 That is, the first protruding portion 14 provided on the first terminal 11 projects toward the second terminal 12, and penetrates from the opening 15 formed in the second terminal 12 to the outside of the second terminal 12. The second protruding portion 16 provided on the second terminal 12 projects toward the first terminal 11 and penetrates from the opening 13 formed in the first terminal 11 to the outside of the first terminal 11.

図２（ａ）に示す第１端子１１の正面視において、第２突出部１６は第１突出部１４の左側に位置し、第１突出部１４は第２突出部１６の右側に位置する。逆に、図２（ａ）の紙面裏側の正面視（第２端子１２の正面視）において、第１突出部１４は第２突出部１６の左側に位置し、第２突出部１６は第１突出部１４の右側に位置する。第１突出部１４と第２突出部１６は交差している。 In the front view of the first terminal 11 shown in FIG. 2A, the second protruding portion 16 is located on the left side of the first protruding portion 14, and the first protruding portion 14 is located on the right side of the second protruding portion 16. On the contrary, in the front view (front view of the second terminal 12) on the back side of the paper surface in FIG. 2A, the first protrusion 14 is located on the left side of the second protrusion 16, and the second protrusion 16 is the first. It is located on the right side of the protrusion 14. The first protrusion 14 and the second protrusion 16 intersect.

次に、実施形態のボードアンカー１、およびタッピングネジを使って、取付物を石膏ボードに取り付ける方法について説明する。 Next, a method of attaching the attachment to the gypsum board using the board anchor 1 of the embodiment and the tapping screw will be described.

まず、ボードアンカー１が石膏ボードに打ち込まれる。このとき、第１端子１１と第２端子１２は、閉じている。図２（ｂ）において石膏ボード２００を仮想的に２点鎖線で表している。例えばハンマーでボードアンカー１の頭部２３、２４を叩いて、ボードアンカー１を石膏ボード２００に打ち込む。ボードアンカー１は石膏ボード２００を貫通し、ボードアンカー１の先端部６１、６２は石膏ボード２００の裏側の空間に突き出る。 First, the board anchor 1 is driven into the gypsum board. At this time, the first terminal 11 and the second terminal 12 are closed. In FIG. 2B, the gypsum board 200 is virtually represented by a two-dot chain line. For example, the heads 23 and 24 of the board anchor 1 are hit with a hammer to drive the board anchor 1 into the gypsum board 200. The board anchor 1 penetrates the gypsum board 200, and the tips 61 and 62 of the board anchor 1 project into the space behind the gypsum board 200.

次に、石膏ボード２００に打ち込まれたボードアンカー１に、取付物を添えタッピングネジをねじ込む。タッピングネジは、ボードアンカー１の開口２５からネジ挿入部２６に右回りでねじ込まれる。 Next, a tapping screw is screwed into the board anchor 1 driven into the gypsum board 200 with an attachment. The tapping screw is screwed clockwise from the opening 25 of the board anchor 1 into the screw insertion portion 26.

図５（ａ）に示すように、タッピングネジ１００の頭部と石膏ボード２００との間に取付物３００が取付られる。図５（ｂ）は、図５（ａ）の下面図である。 As shown in FIG. 5A, the attachment 300 is attached between the head of the tapping screw 100 and the gypsum board 200. FIG. 5B is a bottom view of FIG. 5A.

図４に示すように、第１固定部４１および第２固定部４２に形成されたネジ受け溝３１に、タッピングネジ１００のネジ山１０１が嵌合する。ネジ受け溝３１はネジ山１０１が嵌合する雌ねじを形成する。ネジ受け溝３１は、第１端子１１と第２端子１２とが重ね合わされた部分に形成されている。すなわち、２枚の板状の第１端子１１と第２端子１２との合計板厚をもつ部分で、タッピングネジ１００からの力を受ける。そのため、タッピングネジ１００のねじ込みに伴ってタッピングネジ１００からの大きな力が固定部４１、４２に加わっても、固定部４１、４２は変形や破損などせず、ボードアンカー１の信頼性を高くできる。 As shown in FIG. 4, the screw thread 101 of the tapping screw 100 fits into the screw receiving groove 31 formed in the first fixing portion 41 and the second fixing portion 42. The screw receiving groove 31 forms a female screw into which the screw thread 101 fits. The screw receiving groove 31 is formed in a portion where the first terminal 11 and the second terminal 12 are overlapped with each other. That is, the portion having the total plate thickness of the two plate-shaped first terminals 11 and the second terminals 12 receives the force from the tapping screw 100. Therefore, even if a large force from the tapping screw 100 is applied to the fixing portions 41 and 42 as the tapping screw 100 is screwed in, the fixing portions 41 and 42 are not deformed or damaged, and the reliability of the board anchor 1 can be increased. ..

このとき、ガイドリブ２１、２２は、タッピングネジ１００のネジ溝に対向し、タッピングネジ１００の傾きなどを規制するガイドとして機能する。第１端子１１に形成されたガイドリブ２１は、タッピングネジ１００のネジ山１０１の底部間隔より小さく形成されている。第２端子１２に形成されたガイドリブ２２は、タッピングネジ１００のネジ山１０１の底部間隔より小さく形成されている。タッピングネジ１００のネジ山１０１と、ガイドリブ２１、２２と、の間には設計上隙間が形成され、ガイドリブ２１、２２はタッピングネジ１００からの締付力を受けない。 At this time, the guide ribs 21 and 22 face the thread groove of the tapping screw 100 and function as a guide for regulating the inclination of the tapping screw 100 and the like. The guide ribs 21 formed on the first terminal 11 are formed to be smaller than the bottom spacing of the threads 101 of the tapping screw 100. The guide ribs 22 formed on the second terminal 12 are formed to be smaller than the bottom spacing of the threads 101 of the tapping screw 100. A gap is formed by design between the thread 101 of the tapping screw 100 and the guide ribs 21 and 22, and the guide ribs 21 and 22 do not receive the tightening force from the tapping screw 100.

さらに奥にねじ込まれたタッピングネジ１００が、第１突出部１４および第２突出部１６にくさび状に当たることで、図５（ａ）に示すように、第１端子１１と第２端子１２が拡開する。 Further, the tapping screw 100 screwed into the back hits the first protruding portion 14 and the second protruding portion 16 in a wedge shape, so that the first terminal 11 and the second terminal 12 are expanded as shown in FIG. 5 (a). Open.

前述したように、図２（ａ）に示す第１端子１１の正面視において、第２端子１２に設けられた第２突出部１６は、第１端子１１に設けられた第１突出部１４の左側に位置し、第１突出部１４は第２突出部１６の右側に位置し、右回りでねじ込まれるタッピングネジ１００が第２突出部１６の傾斜面および第１突出部１４の傾斜面に適切な押圧力を与えることで、タッピングネジ１００の回転力が、第１端子１１と第２端子１２とを広げる力に効率的に変換される。 As described above, in the front view of the first terminal 11 shown in FIG. 2A, the second protruding portion 16 provided on the second terminal 12 is the first protruding portion 14 provided on the first terminal 11. Located on the left side, the first protrusion 14 is located on the right side of the second protrusion 16, and the tapping screw 100 screwed in clockwise is suitable for the inclined surface of the second protrusion 16 and the inclined surface of the first protrusion 14. By applying a large pressing force, the rotational force of the tapping screw 100 is efficiently converted into a force for expanding the first terminal 11 and the second terminal 12.

仮に、図２（ａ）に示す第１端子１１の正面視において、第２端子１２に設けられた第２突出部１６が第１端子１１に設けられた第１突出部１４の右側に位置し、第１突出部１４が第２突出部１６の左側に位置していると、タッピングネジ１００の回転力は第１突出部１４および第２突出部１６にうまく伝わらず、第１端子１１と第２端子１２とは拡開しにくくなる。 Temporarily, in the front view of the first terminal 11 shown in FIG. 2A, the second protruding portion 16 provided on the second terminal 12 is located on the right side of the first protruding portion 14 provided on the first terminal 11. When the first protruding portion 14 is located on the left side of the second protruding portion 16, the rotational force of the tapping screw 100 is not transmitted well to the first protruding portion 14 and the second protruding portion 16, and the first terminal 11 and the second It becomes difficult to expand with the 2-terminal 12.

また、第１突出部１４と第２突出部１６のＸ方向の位置をずらして、第１突出部１４を第２端子１２の外側に突き抜けさせ、第２突出部１６を第１端子１１の外側に突き抜けさせ、第１突出部１４と第２突出部１６とを交差させることで、第１端子１１と第２端子１２の広がる角度を大きくすることができる。これは、ボードアンカー１が石膏ボード２００からより抜けにくくする。 Further, the positions of the first protruding portion 14 and the second protruding portion 16 in the X direction are shifted so that the first protruding portion 14 penetrates the outside of the second terminal 12, and the second protruding portion 16 is outside the first terminal 11. By crossing the first protruding portion 14 and the second protruding portion 16, the widening angle of the first terminal 11 and the second terminal 12 can be increased. This makes it more difficult for the board anchor 1 to come off the gypsum board 200.

第１端子１１と第２端子１２との拡開によりボードアンカー１は石膏ボード２００に固定され、タッピングネジ１００がネジ受け溝３１に嵌合することで、ボードアンカー１に対してタッピングネジ１００は結合される。タッピングネジ１００を、ねじ込むときと逆の左回りに回すとタッピングネジ１００はボードアンカー１から外れる。第１端子１１および第２端子１２はいわゆる板状片であるので、第１突出部１４および第２突出部１６がタッピングネジ１００から受ける開口力が解除されると、石膏ボード２００からボードアンカー１を引き抜くことができる。 The board anchor 1 is fixed to the gypsum board 200 by expanding the first terminal 11 and the second terminal 12, and the tapping screw 100 is fitted into the screw receiving groove 31 so that the tapping screw 100 is attached to the board anchor 1 with respect to the board anchor 1. Be combined. When the tapping screw 100 is turned counterclockwise in the opposite direction to the screwing, the tapping screw 100 is disengaged from the board anchor 1. Since the first terminal 11 and the second terminal 12 are so-called plate-shaped pieces, when the opening force received by the first protruding portion 14 and the second protruding portion 16 from the tapping screw 100 is released, the board anchor 1 is released from the gypsum board 200. Can be pulled out.

なお、本実施形態のボードアンカー１を打ち込む対象となるボードは、石膏ボードに限らない。 The board to which the board anchor 1 of the present embodiment is driven is not limited to gypsum board.

以上、具体例を参照しつつ本発明の実施形態について説明した。しかし、本発明は、それらに限定されるものではなく、本発明の技術的思想に基づいて種々の変形が可能である。 The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited thereto, and various modifications can be made based on the technical idea of the present invention.

１…ボードアンカー、１１…第１端子、１２…第２端子、１４…第１突出部、１６…第２突出部、２１,２２…ガイドリブ、３１…ネジ受け溝、１００…タッピングネジ、２００…石膏ボード、３００…取付物 1 ... Board anchor, 11 ... 1st terminal, 12 ... 2nd terminal, 14 ... 1st protrusion, 16 ... 2nd protrusion, 21, 22 ... Guide rib, 31 ... Screw receiving groove, 100 ... Tapping screw, 200 ... Gypsum board, 300 ... Attachment

Claims (4)

板状の第１端子と、前記第１端子と重ね合わされた板状の第２端子と、を有し、前記第１端子と前記第２端子との間のネジ挿入部にタッピングネジがねじ込まれることで、前記第１端子および前記第２端子が互いに離間するように拡開するボードアンカーであって、
前記第１端子と前記第２端子とが重ね合わされ、前記第１端子と前記第２端子との合計板厚をもつ部分における前記ネジ挿入部を挟んで位置し前記ネジ挿入部に隣接する面に、前記タッピングネジのネジ山が嵌合する雌ねじを形成する複数のネジ受け溝が、前記ネジ山のピッチ及びネジ山形状に合わせて設けられているボードアンカー。 It has a plate-shaped first terminal and a plate-shaped second terminal overlapped with the first terminal, and a tapping screw is screwed into a screw insertion portion between the first terminal and the second terminal. As a result, it is a board anchor that expands so that the first terminal and the second terminal are separated from each other.
The first terminal and the second terminal are overlapped with each other, and are located on a surface adjacent to the screw insertion portion at a portion having a total plate thickness of the first terminal and the second terminal so as to sandwich the screw insertion portion. , A board anchor in which a plurality of screw receiving grooves forming a female screw to which the threads of the tapping screw are fitted are provided according to the pitch and thread shape of the threads. 前記タッピングネジのネジ溝に対向するガイドリブをさらに有する請求項１記載のボードアンカー。 The board anchor according to claim 1, further comprising a guide rib facing the thread groove of the tapping screw. 前記第１端子は、前記第２端子に向かって突出した第１突出部を有し、
前記第２端子は、前記第１端子に向かって突出した第２突出部を有し、
前記第１端子の正面視において、前記第２突出部は前記第１突出部の左側に位置し、前記第１突出部は前記第２突出部の右側に位置し、
右回りでねじ込まれる前記タッピングネジが前記第１突出部および前記第２突出部にくさび状に当たることで、前記第１端子と前記第２端子が拡開する請求項１または２に記載のボードアンカー。 The first terminal has a first protruding portion that protrudes toward the second terminal.
The second terminal has a second protruding portion that protrudes toward the first terminal.
In the front view of the first terminal, the second protrusion is located on the left side of the first protrusion, and the first protrusion is located on the right side of the second protrusion.
The board anchor according to claim 1 or 2, wherein the tapping screw screwed in clockwise hits the first protruding portion and the second protruding portion in a wedge shape, whereby the first terminal and the second terminal are expanded. .. 前記第１突出部と前記第２突出部は、交差している請求項３記載のボードアンカー。 The board anchor according to claim 3, wherein the first protrusion and the second protrusion intersect.
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