【０００１】
【発明の属する技術分野】
この発明は、ＡＬＣ（発泡コンクリート）建材に、薄いスレート板のような、過大な押圧力が加わると割れやすい部材を直接取り付ける場合等に使用する開脚制御釘、更に詳しくは、二本の脚体の重なり面に設ける開脚制御部分の構造に関する。
【０００２】
【従来の技術】
ＡＬＣに各種部材を固定するための開脚制御釘として、施工後に緩んでも直ぐに抜けることがなく、どんな硬度のＡＬＣにも一定に開脚し、打ち込み時に被取り付け物を破損しないようにしたものを、本出願人は特願平７ー２３１４９８号で提案した。
【０００３】
この開脚制御釘は、図４（Ａ）乃至（Ｃ）に示すように、周面に平坦面を有する断面形状の線材からなる二本の脚体１と２が一端に頭部３と４と他端に先端部５と６を有し、一方脚体１の先端寄りの位置に平坦面側へ突出した開脚用突部７を設け、両脚体１と２の重なり面に一対の開脚制御部８を設け、この開脚制御部８を嵌め合わた状態で、他方脚体２の先端部６を一方脚体２の開脚用突部７に重ならないように位置させ、かつ、他方脚体２の頭部４を一方脚体１の頭部４よりも上部に位置するように平坦面を重ね合わせてワッシャ９で緊束した構造になっている。
【０００４】
上記開脚制御部８は、一方脚体１の平坦面に設けた円錐台形状の窪み部１０と、他方脚体２の平坦面に設けられ、該窪み部１０に嵌り合う円錐台形状の小突起１１とからなり、小突起１１は、プレス成形によって形成され、開脚制御部８の嵌合状態はワッシヤ９の緊束によって保持されている。
【０００５】
図４（Ａ）に示したセット状態の開脚制御釘は、図４（Ｂ）の如く、釘孔１２を有するスレート板等の被取り付け物１３上からＡＬＣ１４に向けて打ち込むと、ワッシャ９が被取り付け物１４上に当接するまでの間は、開脚制御部８の嵌合によって両脚体１と２は軸方向のずれの発生はなく、互いに重なり合ったまま直進し、ワッシャ９が被取り付け物１３上に当接した状態で更に打ち込むと、停止したワッシャ９に対して両脚体１と２は前進するため、相対的にワッシャ９は一方脚体１の頭部側に移動したことになり、該ワッシャ９は窪み部１０と小突起１１の嵌合部分を通り抜け、一方脚体１の頭部がワッシャ９に当接し、進入が停止する。
【０００６】
これと同時に、ワッシャ９による窪み部１０と小突起１１の緊束が解かれ、互いに嵌合している窪み部１０と小突起１１は離脱し、ハンマーによる打ち込み力を受ける他方脚体２は、停止した一方脚体１に対してスライドしてＡＬＣ１４内に進入し、他方脚体２の先端は一方脚体１に設けた開脚用突部７に乗り上げ、図４（Ｂ）の如く、他方脚体２は一方脚体１と離反する方向へ開脚し、頭部４がワッシャ９に当接する状態で締結が完了する。
【０００７】
上記のように、この開脚制御釘は、開脚制御部８の嵌合状態をワッシャ９で保持するので、ＡＬＣ１４への打ち込み途中までは開脚の発生がなく、ワッシャ９に一方脚体１の頭部３が当接した後に開脚を生じさせるので、どのような硬さのＡＬＣ１４に対しても一定の開脚状態が得られると共に、被取り付け物１３に大きな負荷をかけることがない。
【０００８】
【発明が解決しようとする課題】
ところで、上記開脚制御釘において、窪み部１０と小突起１１による開脚制御部８は、その形成に別途プレス工程が必要になり、開閉制御釘の製造工程が増え、製作コストを高騰させるという問題がある。
【０００９】
そこで、この発明の課題は、開脚制御部の形成が脚体の成形時に同時に行え、工程を増やすことなく製作できる開脚制御釘を提供することにある。
【００１０】
【課題を解決するための手段】
上記のような課題を解決するため、請求項１の発明は、周面に平坦面を有する断面形状の線材からなる二本の脚体が一端に頭部と他端に先端部を有し、一方脚体の先端寄りの位置に平坦面側へ突出した開脚用突部を設け、両脚体を、他方脚体の先端部が一方脚体の開脚用突部に重ならず、かつ、他方脚体の頭部が一方脚体の頭部よりも上部に位置するように平坦面を重ね合わせてワッシャで緊束した開閉制御釘において、両脚体の重なり合う平坦面でワッシャによって緊束する部分の位置に、脚体の幅方向に沿う凹部と凸部が脚体の軸方向に複数が交互に連続し、脚体の重ね合わせによって互いに嵌まり合う開脚制御部を設けた構成を採用したものである。
【００１１】
請求項２の発明は、周面に平坦面を有する断面形状の線材からなる二本の脚体が一端に頭部と他端に先端部を有し、一方脚体の先端寄りの位置に平坦面側へ突出した開脚用突部を設け、他方脚体は一方脚体の開脚用突部を越えた長さを有して該開脚用突部を収納する凹部が設けられ、両脚体を、他方脚体の頭部が一方脚体の頭部よりも上部に位置するように平坦面を重ね合わせてワッシャで緊束した開閉制御釘において、両脚体の重なり合う平坦面でワッシャによって緊束する部分の位置に、脚体の幅方向に沿う凹部と凸部が脚体の軸方向に複数が交互に連続し、脚体の重ね合わせによって互いに嵌まり合う開脚制御部を設けた構成を採用したものである。
【００１２】
ここで、一方脚体の先端寄りの位置に平坦面側へ突設した開脚用突部は、脚部を蛇行するように折り曲げて曲面状や台形状に形成された突起、又は、プレス成形によって平坦面の中央に部分的に盛り上げられたコブ状の突起の何れかで形成されている。
【００１３】
【発明の実施の形態】
以下、この発明の実施の形態を図示例と共に説明する。なお、開脚制御釘の基本的な構造は図４（Ａ）乃至（Ｃ）を用いて従来の技術の項で示したものと同じであるので、従来と同一の部分については、同じ符号を付して説明に代える。
【００１４】
図１と図２に示す第１の実施形態の開脚制御釘は、一方脚体１と他方脚体２のセット状態で、他方脚体２の先端部６が一方脚体１の開脚用突部７に重ならないように位置させたタイプであり、両脚体１と２の重なり合う平坦面でワッシャ９によって緊束する部分に設けた開脚制御部８ａは、脚体１と２の幅方向に沿う台形や山形の凸部２１とこの凸部２１が嵌合する凹部２２を、脚体１と２の軸方向の適宜長さの範囲内で複数が交互に連続するように設けて形成され、脚体１と２の重ね合わせによって互いに嵌まり合う構造になっている。
【００１５】
前記開脚用突部７は、プレス成形等の手段を用い、脚体１の途中を山形、台形、略半円形、横向きＶ字状等に屈曲させることによって形成し、脚体１を折り曲げて形成することにより、開脚用突部７は弾力性を有する。
【００１６】
上記開脚制御部８ａを設ける位置は、二本の脚体１と２を重ねて開脚制御部８ａを嵌合させたとき、他方脚体２の先端部６が一方脚体１の開脚用突部７に重ならないと共に、他方脚体２の頭部４が一方脚体１の頭部３よりも上部になるように設定され、緊束するワッシャ９の位置は、嵌合する開脚制御部８ａの外側で、一方脚体１の頭部３との間に余裕を設けるように設定されている。
【００１７】
前記開脚制御部８ａは、両脚体１と２の平坦面に対し、対応する形状の凸部と凹部を連続して設けたポンチを用いて形成することができ、このポンチは両脚体１、２の頭部３、４や一方脚体１の開脚用突部７の加工用金型と組み合わせることにより、脚体１、２の形成工程時に同時に加工することができ、開脚制御釘の製造工程を別途増やす必要がない。
【００１８】
なお、両脚体１、２の断面形状は、図示のような半円形以外に角形等であってもよく、その先端は、テーパ面や尖っているほか、丸くても平らでもよいと共に、頭部３、４は、略半円形の平板状のものを示したが、他方脚体２の頭部４は直棒状に形成してもよい。
【００１９】
次に、図３（Ａ）、（Ｂ）に示す第２の実施形態の開脚制御釘は、一方脚体１と他方脚体２のセット状態で、他方脚体２の先端部６が一方脚体１の開脚用突部７に重なるように位置させたタイプであり、一方脚体１の開脚用突部７がプレス成形によってコブ状の突起に形成され、他方脚体２の平坦面で先端側の位置に開脚用突部７へ外嵌する凹部１５を設けた以外は、先の第１の実施形態の開脚制御釘と同じ構造になっている。
【００２０】
この発明の開脚制御釘は、上記のような構成であり、図１（Ａ）に示すセット状態の開脚制御釘を、釘孔１２を有するスレート板等の被取り付け物１３上からＡＬＣ１４に対してハンマーで打ち込むと、ワッシャ９が被取り付け物１３に当接するまでの間は、両脚体１、２は互いに重なりあったままＡＬＣ１４内に直進し、開脚は発生しない。
【００２１】
即ち、両脚体１、２は、開脚制御部８ａの嵌合がワッシャ９の緊束によって保持されているため、他方脚体２の頭部４に打撃を加えても、両脚体１、２は結合されたままとなり、一体となってＡＬＣ１４内に進入する。
【００２２】
ワッシャ９が被取り付け物１３に当接した状態で更に打ち込むと、停止したワッシャ９に対して両脚体１、２は前進するため、相対的にワッシャ９は一方脚体１の頭部３に移動したことになり、該ワッシヤ９は開脚制御部８ａの嵌合部分を滑り抜け、一方脚体１の頭部３がワッシヤ９に当接し、進入が停止する。
【００２３】
これと同時に、ワッシヤ９による開脚制御部８ａの緊束が解放され、他方脚体２にハンマーで打ち込み力を加えると、開脚制御部８ａは離脱し、停止した一方脚体１に対してスライドし、ＡＬＣ１４内に更に進入を行い、他方脚体２の先端は一方脚体１の開脚用突部７の上に滑るように乗り上げ、他方脚体２はＡＬＣ１４内への進入と共に、一方脚体１と離反する方向へ開脚し、頭部４がワッシャ９に当接する状態で締結が完了する。
【００２４】
【発明の効果】
以上のように、この発明によると、両脚体の重なり面に設けた開脚制御部を、脚体の幅方向に沿う凹部と凸部が脚体の軸方向に複数が交互に連続し、脚体の重ね合わせによって互いに嵌まり合う構造としたので、開脚制御部の形成が脚体の加工工程と同時に加工でき、工程数を増やすことなく開脚制御部を形成することが可能になり、開脚制御釘の加工コストの削減と製作能率の向上が図れる。
【図面の簡単な説明】
【図１】（Ａ）はこの発明に係る開脚制御釘のセット状態を示す正面図、（Ｂ）は同上の打ち込み状態を示す縦断面図、（Ｃ）は開脚制御釘の開脚制御部での拡大断面図
【図２】開脚制御釘の分解斜視図
【図３】（Ａ）はこの発明に係る開脚制御釘の他の例を示すセット状態の正面図、（Ｂ）は同上の分解斜視図
【図４】（Ａ）は従来の開脚制御釘のセット状態を示す正面図、（Ｂ）は同上の打ち込み状態を示す縦断面図、（Ｃ）は開脚制御釘の開脚制御部での拡大断面図
【符号の説明】
１，２ 脚体
３，４ 頭部
５，６ 先端部
７ 開脚用突部
８ａ 開脚制御部
９ ワッシャ
１０ 窪み部
１１ 小突起
２１ 凸部
２２ 凹部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an open leg control nail used for directly attaching a member that is easily cracked when an excessive pressing force is applied to an ALC (foamed concrete) building material, such as a thin slate plate, and more specifically, two legs. The present invention relates to a structure of a leg opening control portion provided on an overlapping surface of the body.
[0002]
[Prior art]
As a leg opening control nail for fixing various members to the ALC, it will not come out immediately even if it is loosened after construction, and it will be opened to a constant ALC of any hardness so that the attachment will not be damaged when driven. The present applicant has proposed in Japanese Patent Application No. 7-231498.
[0003]
As shown in FIGS. 4 (A) to (C), the leg opening control nail has two legs 1 and 2 made of a wire having a cross-sectional shape having a flat surface on the peripheral surface, and heads 3 and 4 at one end. The other end has tip portions 5 and 6, and one leg body 1 is provided with an opening leg projection 7 projecting toward the flat surface at a position close to the tip end. In the state where the leg control unit 8 is provided, and the leg control unit 8 is fitted, the tip 6 of the other leg 2 is positioned so as not to overlap the leg projection 7 of the one leg 2, and The head 4 of the other leg 2 is superposed on the flat surface so that the head 4 is positioned above the head 4 of the one leg 1, and is tightly bound by a washer 9.
[0004]
The leg opening control unit 8 includes a truncated cone-shaped recess 10 provided on the flat surface of the one leg 1, and a truncated cone-shaped small portion provided on the flat surface of the other leg 2 and fitted into the recess 10. The small projection 11 is formed by press molding, and the fitting state of the opening leg control unit 8 is held by the tight binding of the washer 9.
[0005]
As shown in FIG. 4 (B), when the leg opening control nail in the set state shown in FIG. 4 (A) is driven toward the ALC 14 from the attachment 13 such as a slate plate having the nail hole 12, the washer 9 Until the contact with the attachment 14, the legs 1 and 2 are not displaced in the axial direction due to the fitting of the leg opening control unit 8, and go straight while overlapping each other, and the washer 9 is attached to the attachment. 13 and the leg 1 and 2 move forward with respect to the stopped washer 9, so the washer 9 has moved to the head side of one leg 1, The washer 9 passes through the fitting portion between the recess 10 and the small protrusion 11, while the head of the leg 1 abuts against the washer 9, and the entry stops.
[0006]
At the same time, the depression 10 and the small protrusion 11 are released from the washer 9 and the fitting 10 and the small protrusion 11 are separated from each other. It slides with respect to the stopped one leg 1 and enters the ALC 14, and the tip of the other leg 2 rides on an opening leg projection 7 provided on the one leg 1, and as shown in FIG. The leg 2 is opened in a direction away from the one leg 1, and the fastening is completed in a state where the head 4 is in contact with the washer 9.
[0007]
As described above, since the open leg control nail holds the fitting state of the open leg control unit 8 with the washer 9, there is no occurrence of the open leg until it is driven into the ALC 14, and the one leg 1 is attached to the washer 9. Since the legs are opened after the head 3 of the head comes into contact with each other, a constant open leg state can be obtained for any hardness of the ALC 14 and a large load is not applied to the attachment 13.
[0008]
[Problems to be solved by the invention]
By the way, in the above-mentioned leg opening control nail, the leg opening control part 8 by the depression 10 and the small protrusion 11 requires a separate pressing process for its formation, which increases the manufacturing process of the opening / closing control nail and increases the manufacturing cost. There's a problem.
[0009]
Accordingly, an object of the present invention is to provide an open leg control nail that can be formed at the same time as the leg is formed, and can be manufactured without increasing the number of steps.
[0010]
[Means for Solving the Problems]
In order to solve the problems as described above, the invention of claim 1 is characterized in that two legs made of a wire having a cross-sectional shape having a flat surface on the peripheral surface have a head at one end and a tip at the other end. One leg is provided with an opening leg protrusion projecting toward the flat surface at a position close to the tip of the leg, and the two legs are not overlapped with the opening leg protrusion of the one leg, and In the open / close control nail where the flat surface is overlapped and fastened with a washer so that the head of the other leg is positioned above the head of the one leg, the portion that is tightly bound by the washer on the flat surface where both legs overlap In this position, a configuration is adopted in which a plurality of concave and convex portions along the width direction of the leg body are alternately arranged in the axial direction of the leg body, and an open leg control unit that fits each other by overlapping the leg bodies is adopted. Is.
[0011]
In the invention of claim 2, two legs made of a wire having a cross-sectional shape having a flat surface on the peripheral surface have a head at one end and a tip at the other end, and are flat at a position near the tip of one leg. Protrusions for opening legs projecting to the surface side are provided, and the other leg has a length that exceeds the protrusion for opening legs of one leg, and is provided with a recess for accommodating the protrusion for opening legs. In an open / close control nail in which the flat surface is overlapped and fastened with a washer so that the head of the other leg is positioned above the head of the one leg, the body is fastened by the washer on the flat surface where both legs overlap. A configuration in which a plurality of concave and convex portions along the leg width direction are alternately arranged in the axial direction of the leg body at the position of the bundled portion, and an open leg control unit that fits to each other by overlapping the leg bodies is provided Is adopted.
[0012]
Here, the open leg protrusion projecting toward the flat surface at a position near the tip of the one leg is a protrusion formed into a curved or trapezoidal shape by bending the leg to meander, or press molding Thus, it is formed by any of the bump-shaped protrusions that are partially raised at the center of the flat surface.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The basic structure of the open leg control nail is the same as that shown in the section of the prior art using FIGS. 4 (A) to 4 (C). In addition, it replaces with description.
[0014]
The leg opening control nail of the first embodiment shown in FIG. 1 and FIG. 2 is in a set state of one leg body 1 and the other leg body 2 and the tip portion 6 of the other leg body 2 is for leg opening of the one leg body 1. The leg opening control portion 8a is a type that is positioned so as not to overlap the protrusion 7 and is provided in a portion where the legs 1 and 2 overlap with each other on the flat surface where the legs 1 and 2 overlap with each other. Are formed so that a plurality of the convex portions 21 and the concave portions 22 into which the convex portions 21 are fitted are alternately arranged within the appropriate length in the axial direction of the legs 1 and 2. The legs 1 and 2 are overlapped with each other.
[0015]
The leg-opening protrusion 7 is formed by bending the leg 1 in a mountain shape, trapezoidal shape, substantially semicircular shape, laterally V-shape, or the like by using means such as press molding. By forming, the protrusion 7 for leg opening has elasticity.
[0016]
The position where the leg opening control portion 8a is provided is such that when the two leg bodies 1 and 2 are overlapped and the leg opening control portion 8a is fitted, the distal end portion 6 of the other leg body 2 is the leg opening of the one leg body 1. The head 4 of the other leg 2 is set so as to be higher than the head 3 of the one leg 1 and does not overlap the projection 7 for use, and the position of the washer 9 to be tightly bound is the open leg to be fitted It is set to provide a margin between the head 3 of the one leg 1 and the outside of the control unit 8a.
[0017]
The leg opening control portion 8a can be formed by using a punch in which a convex portion and a concave portion corresponding to each other are continuously provided on the flat surfaces of both the legs 1 and 2, and the punch is formed in both legs 1, 2 in combination with the mold for machining the head leg 3, 4 or the leg opening protrusion 7 of the one leg 1, the leg 1, 2 can be processed simultaneously. There is no need to increase the manufacturing process separately.
[0018]
In addition, the cross-sectional shape of both legs 1 and 2 may be a square or the like in addition to the semicircular shape shown in the figure, and the tip thereof may be round or flat in addition to a tapered surface or a sharp point. Although 3 and 4 showed the substantially semicircular flat thing, you may form the head 4 of the other leg 2 in the shape of a straight bar.
[0019]
Next, in the second leg opening nail shown in FIGS. 3 (A) and 3 (B), the one leg 1 and the other leg 2 are set, and the tip 6 of the other leg 2 is one. It is a type positioned so as to overlap the leg opening protrusion 7 of the leg 1, and the leg opening protrusion 7 of the one leg 1 is formed into a bump-shaped protrusion by press molding, and the other leg 2 is flat. The structure is the same as that of the leg opening control nail of the first embodiment, except that a concave portion 15 that is externally fitted to the leg opening protrusion 7 is provided at a position on the distal end side.
[0020]
The open leg control nail of the present invention is configured as described above, and the open leg control nail in the set state shown in FIG. 1 (A) is transferred from the attachment 13 such as a slate plate having the nail hole 12 to the ALC 14. On the other hand, when the hammer is driven in, until the washer 9 comes into contact with the attachment 13, both the legs 1 and 2 are moved straight into the ALC 14 while being overlapped with each other, and the legs are not opened.
[0021]
That is, since both the legs 1 and 2 are held by the tight binding of the washer 9 with the fitting of the leg opening control portion 8a, even if the head 4 of the other leg 2 is hit, Remain coupled and enter the ALC 14 together.
[0022]
If the washer 9 is further driven in contact with the attachment 13, both legs 1 and 2 move forward with respect to the stopped washer 9, so that the washer 9 moves relatively to the head 3 of the one leg 1. As a result, the washer 9 slips through the fitting portion of the leg opening control portion 8a, while the head 3 of the leg 1 abuts against the washer 9, and the entry stops.
[0023]
At the same time, the tightness of the open leg control unit 8a by the washer 9 is released, and when a driving force is applied to the other leg 2 with a hammer, the open leg control unit 8a is detached, and the stopped leg 1 is stopped. Slide and make further entry into the ALC 14, and the tip of the other leg 2 rides so as to slide on the projection 7 for the open leg of the one leg 1, while the other leg 2 moves into the ALC 14, The leg is opened in a direction away from the leg 1, and the fastening is completed in a state where the head 4 is in contact with the washer 9.
[0024]
【The invention's effect】
As described above, according to the present invention, the leg opening control portion provided on the overlapping surface of both legs has a plurality of recesses and projections along the width direction of the legs that are alternately continuous in the axial direction of the legs. Because it is a structure that fits each other by overlapping the body, the formation of the leg control unit can be processed at the same time as the leg processing process, and it is possible to form the leg control unit without increasing the number of steps, It is possible to reduce the processing cost of the open leg control nail and improve the production efficiency.
[Brief description of the drawings]
FIG. 1A is a front view showing a setting state of an open leg control nail according to the present invention, FIG. 1B is a longitudinal sectional view showing a driving state of the same, and FIG. 1C is an open leg control of an open leg control nail; FIG. 2 is an exploded perspective view of a leg opening control nail. FIG. 3A is a front view of a set state showing another example of the leg opening control nail according to the present invention, and FIG. FIG. 4A is a front view showing a set state of a conventional leg opening control nail, FIG. 4B is a longitudinal sectional view showing the driving state of the leg opening control nail, and FIG. Expanded cross-sectional view of the leg opening control unit [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 2 Leg body 3, 4 Head 5, 6 Tip part 7 Opening leg protrusion 8a Opening leg control part 9 Washer 10 Depression part 11 Small protrusion 21 Convex part 22 Concave part
