JP4061605B2

JP4061605B2 - Plate nut body

Info

Publication number: JP4061605B2
Application number: JP14840497A
Authority: JP
Inventors: 一一生田; 誠敬遠藤
Original assignee: 若井産業株式会社
Priority date: 1997-04-30
Filing date: 1997-04-30
Publication date: 2008-03-19
Anticipated expiration: 2017-04-30
Also published as: JPH10306818A

Description

【０００１】
【発明の属する技術】
産業機器などにおいて、中空部分に部品をボルトで固定または機器の組み立てに用いるナット体に関する。
【０００２】
【従来の技術】
パイプのような、中空部分の端部に開口部を有する場合を例として従来技術を説明すると、長い棒状の支持具の先端に仮止めしたナットを開口部から中空の内部深く挿入しながら取り付け穴に位置を合わせて、取り付ける部品をボルトで固定している。
【０００３】
あるいは車両のボディのように２枚の鋼板を溶接などの手段で袋状に接合した開口部を有しない産業機器の場合は、溶接の前にあらかじめ金属ナットを内側に溶接しておき、これに機器の表側から部品をボルトで固定している。
【０００４】
【発明が解決しようとする課題】
従来の方法によると、棒状の支持具を用いる場合は、奥深い部分でナットの位置を固定部に合わせる作業が困難で時間も要した。
【０００５】
あらかじめ所定の位置に確実にナットを溶接できる場合はそのような課題は有しないが、実用上において、袋状に接合して中空部材となった後で部品の取り付け位置が変更になる場合や一部の製品においてのみ取り付ける必要のある部品の場合などは、あらかじめナットを溶接しておくことは困難である。
【０００６】
このような場合は、手の入らない中空部分にナットを入れることはできず、ボルトとナットによる固定は不可能となるか、特殊な工具類を必要とした。
【０００７】
【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の発明は金属製の長方形の板状のナットと、その一端側が前記ナットに固着された弾性を有する金属製の薄板状の支持舌片とから成り、中空部材に設けられた下穴に長さ方向に挿入して用いるナット体であって、ナットは厚さ方向に貫通するメネジと、支持舌片が固着された側のメネジの開口周辺に中空部材の下穴に嵌合する凸部を有し、ナット体の挿入方向側を先端、他の側を後端とした時に、支持舌片は中間部にナットの凸部を収容する開口と、先端部にナットと固着する固着端を設け、この固着端に続けて板状のナットから遊離する「へ」の字状に屈曲した屈曲部を設け、固着端にはその両側を先端側からナットのメネジ中心線とメネジの内周面の先端側の端との間の任意の位置までの長さにおいて、ナットの側面に沿って「コ」の字状に折り曲げた折り曲げ部を有し、折り曲げ部を有する一端側を、ナットの挿入方向に向かってほぼ前半分にナットの凸部が支持舌片の開口に少なくともその一部が嵌合するようにして固着した構成を採用したものである。
【０００８】
請求項２の発明は請求項１の発明において、支持舌片は固着端の他端に下穴の直径よりも大きい幅を有する拡大部を有する構成を採用したものである。
【０００９】
請求項３の発明は請求項２の発明において、凸部を有する面のナットの後端部に支持舌片の厚さに相当する肉厚部を設けた構成を採用したものである。
【００１０】
請求項４の発明は、支持舌片は中間部に前記ナットの凸部を収容する開口と、先端部にナットと固着する固着端を設け、この固着端に続けて前記ナットから遊離する「へ」の字状に屈曲した屈曲部を設け、固着端にはその両側を先端側からナットのメネジ中心線とメネジの内周面の先端側の端との間の任意の位置までの長さにおいて、ナットの側面に沿って「コ」の字状に折り曲げられ、さらにナットの背面方向に折り曲げられた折り曲げ部を有する構成を採用したものである。
【００１１】
【発明の実施の形態】
実施の形態について図面を参照して説明すると、図１と図２において金属製の長方形の板状のナット１と、その一端側が前記ナット１に固着された弾性を有する金属製の薄板状の支持舌片２とから成り、中空部材に設けられた下穴１２に長さ方向に挿入して用いるナット体であって、ナット１は厚さ方向に貫通するメネジ３と、支持舌片２が固着された側のメネジ３の開口周辺に中空部材の下穴１２に嵌合する凸部４を有し、ナット１の他面の２つの長辺に曲面またはテーパ面などの側壁傾斜面５、５′を有し、ナット体の挿入方向側を先端、他の側を後端とした時に、支持舌片２は中間部に前記ナット１の凸部４を収容する開口６と、先端部にナット１と固着する固着端を設け、この固着端に続けて前記ナット１から遊離する「へ」の字状に屈曲した屈曲部９、９′を設け、中間部の開口を挟んで後端部に、中空部材に設けられた下穴１２の直径ｄ１よりも大きい幅ｄ２を有する拡大部７を設け、固着端にはその両側を先端側からナット１のメネジ中心線ｃ１とメネジの内周面の先端側の端ｃ２との間の任意の位置までの長さにおいて、ナット１の側面に沿って「コ」の字状に折り曲げた折り曲げ部８、８′を有し、折り曲げ部８、８′を有する一端側を、ナット１の挿入方向に向かってほぼ前半分にナット１の凸部４が支持舌片２の開口６に少なくともその一部が嵌合するようにして溶接・接着・圧入・ねじ・カシメなどの手段で固着したナット体である。
【００１２】
支持舌片２の開口６は折り曲げ部８、８′を有する側においてはナット１の凸部４を十分に収容する形状を有しているが、他の側においては凸部４よりも小さい部分を設けて、凸部４を開口６に完全に収容できないようにしてもよい。
【００１３】
ナット１の挿入方向からみて後端側短辺の中空部材に接する辺には曲面やテーパ面のような傾斜面１０を設けてもよい。
【００１４】
本発明によるとナット１の中空部材裏面に接する面は、ほぼ下半分が固着された薄い支持舌片２によって覆われているため、覆われていない上半分とのわずかな段差が生じるが、この段差が何等かの障害になるような場合はナット１の上半分に支持舌片２の厚さに相当する肉厚部１１を設けてもよい。
【００１５】
本発明のナット体を使用する場合は、支持舌片２の「へ」の字状に屈曲しナット１と遊離した部分をナット１に接するようにして指で押さえながら中空部材に設けられた下穴１２に挿入する（図３）。
【００１６】
ナット１を中空部内に完全に挿入した後、支持舌片２の拡大部７を手前に引き凸部４を下穴１２に嵌合させ（図４）、つづいて支持舌片２を下方に折り曲げる（図５）。
【００１７】
この工程において、本発明のナット体は「コ」の字状に折り曲げた折り曲げ部８、８′を有しているために、支持舌片２の拡大部７が強く引き寄せられても、屈曲部９よりもさらに先端が曲げられることを防ぐことができる。
【００１８】
この状態においては支持舌片２を下方に十分に折り曲げても支持舌片２の復元弾性によって支持舌片２は中空部材に密着せず反発し、この支持舌片２に固着したナット１に間隙１３を生じた傾斜状態で掛止されており、図５に示すようにナット１は直立せず、この状態でボルトをねじ込むと「かみ合い」によるねじ込み不能問題が発生しやすい。
【００１９】
しかし、折り曲げられた拡大部７はその弾性により中空部材から浮き上がった状態で掛止されている（図５に示す）ために、図６に示すように、固定する部品１４などを中空部材に押し当てる時に拡大部７がｆ１の方向に押される動きが生じて、そのほぼ前半分（図５ではほぼ下半分）が支持舌片２に連結して固着されたナット１は拡大部７の動きに連動してｆ２の方向に引き寄せられ直立し、ボルト１５を挿入してねじ込む時に「かみ合い」が発生しにくくなるという効果を生じる。
【００２０】
このようにして、手の入らない中空部材に対して表面側から本発明のナット体を挿入することで部品などのボルト固定が容易にできるという効果を有する。
【００２１】
支持舌片２の屈曲部９、９′をメネジの中心線ｃ１とメネジの内周面の先端側の縁ｃ２との間の任意の位置の長さの位置、例えば支持舌片２の拡大部７を除く部分の幅と図２に示す下穴１２との交点ａまたはその近くにおいて設けることによって、図５に示す支持舌片２の下方への折り曲げ時に支持舌片２の外側縁が下穴の周壁に接しているためにナット体１が下方に引き下げられることを防ぐことができると同時に、ボルトのねじ込みに際してもナット１のメネジ部の左右を支持しているためにナット１がボルト先端で押されても傾斜しにくいために「かみ合い」を防止するという効果、ナットの大きさに比べて最小の下穴径を選択できるという効果を有し、一方従来主として建築用として公知の「トグル式」と称されるメネジを有する棒状のナット体とを対比するため図７に示す特公昭３６−１８８５５号や図８に示す米国特許３，６０５，５４７号に開示されたものを例としてあげるとヒモ状の支持帯が、挿入時の位置でメネジの前方または挿入後の位置で下方に位置するために本発明と思想、構成が異なり、本発明が有する支持舌片の両側が図２の交点ａで下穴の周壁に接してナットの下方への移動を防ぎつつボルト挿入時にメネジ部の左右を支持することでナットの傾斜を防ぐなどの作用効果を有しない。
【００２２】
支持舌片２の開口６は折り曲げ部８、８′を有する側においてはナット１の凸部４を十分に収容する形状を有しているが、他の側においては凸部４よりも小さい部分を設けて、凸部４を開口６に完全に収容できないようにした場合は図３に示す支持舌片２を指でナット１に接するようにして圧っし中空部材に設けられた下穴に挿入する時に、支持舌片２は凸部４が障害物となってナット１と完全に密着できないまま強制的に支持舌片がたわむようにして狭い下穴に挿入されるので、挿入後にナット１は下穴による束縛から解放され反発して直立方向へ少し動き、支持舌片２の拡大部７を引き寄せた時にナット１の直立方向への回転を容易にすることができるという効果を有する。
【００２３】
ナット１の挿入方向からみて後端側短辺の中空部材に接する辺には曲面やテーパ面のような傾斜面１０を設けた場合は本発明のナット体を中空部材に挿入後、引き寄せる時にこの傾斜面１０が最初に中空部材裏面に接して擦るため、傾斜面を設けることでナット１の直立方向への回転を容易にすることができる。
【００２４】
【発明の効果】
以上のように、この発明によると、産業機器などにおいて、中空部分に部品をボルトで固定または機器の組み立てをおこなう時に、あらかじめナットを溶接などの手段で固定しておく必要がなく、あるいはナットの用意されていない箇所であっても、特殊な棒状の支持具などを必要とせず、表側からの作業だけでナットを挿入し部品などをボルトを用いて固定することができる。
【図面の簡単な説明】
【図１】本発明のナット体の例を示す斜視図である。
【図２】同、下穴へ挿入後の正面図である。
【図３】同、下穴への挿入状態を示す側面の一部断面図である。
【図４】同、下穴へ挿入した直後の状態を示す側面の一部断面図である。
【図５】同、支持舌片を折り曲げた状態を示す側面の一部断面図である。
【図６】同、取付け部品をボルトで螺締する状態を示す側面の一部断面図である。
【図７】従来例、特公昭３６−１８８５５号を示す参考図である。
【図８】従来例、米国特許３，６０５，５４７号を示す参考図である。
【符号の説明】
１．ナット
２．支持舌片
３．メネジ
４．凸部
５．側壁傾斜部
６．開口
７．拡大部
８、８′．折り曲げ部
９、９′．屈曲部
１０．傾斜面
１１．肉厚部
１２．下穴[0001]
[Technology to which the invention belongs]
The present invention relates to a nut body used for fixing a part to a hollow portion with a bolt or assembling an apparatus in industrial equipment or the like.
[0002]
[Prior art]
The prior art will be described by taking the case of having an opening at the end of a hollow portion such as a pipe as an example. A nut temporarily fixed to the tip of a long rod-shaped support is inserted deeply into the hollow interior from the opening. The parts to be installed are fixed with bolts.
[0003]
Alternatively, in the case of industrial equipment that does not have an opening that is joined in a bag shape by welding or other means, such as the body of a vehicle, a metal nut is welded inward before welding. Parts are fixed with bolts from the front side of the equipment.
[0004]
[Problems to be solved by the invention]
According to the conventional method, when a rod-shaped support is used, it is difficult and time-consuming to adjust the position of the nut to the fixed part in the deep part.
[0005]
Such a problem does not occur if the nut can be securely welded to a predetermined position in advance. However, in practice, the attachment position of the part may be changed after joining the bag into a hollow member. In the case of a part that needs to be attached only to some products, it is difficult to weld the nut in advance.
[0006]
In such a case, a nut cannot be put into a hollow part that cannot be reached, and fixing with a bolt and a nut becomes impossible or a special tool is required.
[0007]
[Means for Solving the Problems]
To solve the above problems, the invention of claim 1 is a plate-like nut metallic rectangular, a metallic thin plate retaining tongues having elasticity one end is fixed to the nut It is a nut body that is used by inserting in a length direction into a pilot hole provided in a hollow member, and the nut is formed around the opening of the female screw that penetrates in the thickness direction and the female screw on the side to which the support tongue is fixed. The supporting tongue has an opening for accommodating the protruding portion of the nut at the intermediate portion when the insertion direction side of the nut body is the front end and the other side is the rear end. , provided the fixation end to fix the nut to the tip portion, a bent portion bent in shape of "to" liberated from plate-like nut Following this fixing end is provided, the fixed end to both sides from the distal end any length up to a position between the inner peripheral surface of the distal end of the internal thread center line and the female screw of the nut Oite, along the sides of the nut has a shape in the bent bent part of the "U", one end having a bent portion, the convex portion of the nut to substantially front half toward the insertion direction of the nut supporting the tongue A configuration in which at least a part of the opening is fixed to the opening of the piece is employed.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, the support tongue has a configuration in which the other end of the fixed end has an enlarged portion having a width larger than the diameter of the pilot hole.
[0009]
According to a third aspect of the present invention, in the second aspect of the invention, a configuration is adopted in which a thick portion corresponding to the thickness of the supporting tongue piece is provided at the rear end portion of the nut having the convex portion .
[0010]
The invention according to claim 4, the support tongue and the opening for accommodating the protruding portion of the nut to an intermediate portion, the anchoring end to fix the nut provided on the distal end portion, the "released from the nut Following this fixing end a bent portion bent in shape of "provided, the fixed end in the length up to any position between the tip end of the inner circumferential surface of the internal thread center line and the female screw of the nut to both sides from the distal end A configuration is adopted in which a bent portion is bent along the side surface of the nut into a “U” shape and further bent toward the back surface of the nut.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
With reference to the drawings embodiment, FIG. 1 and a plate-like nut 1 metal rectangular in FIG. 2, a metal thin plate-like support having elasticity one end is fixed to the nut 1 A nut body comprising a tongue piece 2 and inserted in a longitudinal direction into a pilot hole 12 provided in a hollow member, and the nut 1 has a female screw 3 penetrating in the thickness direction and a support tongue piece 2 fixed thereto. A convex portion 4 that fits into the pilot hole 12 of the hollow member is provided around the opening of the female screw 3 on the formed side, and two long sides of the other surface of the nut 1 are inclined side walls 5, 5 such as curved surfaces or tapered surfaces. has a 'tip insertion direction side of the nut body, when the rear end of the other side, the support tongue 2 to the opening 6 for accommodating the projecting portion 4 of the nut 1 in the middle portion, a nut at the tip portion the fixation end fixed 1 and provided, shaped "to" liberated from the nut 1 Following this fixing end Provided a bent bent part 9, 9 ', the rear end portion across the opening of the intermediate portion, provided with a enlarged portion 7 having a width greater d2 than the diameter d1 of the prepared hole 12 provided in the hollow member, fixed end the at any length up to a position between the end c2 at the tip side of the inner circumferential surface of the internal thread and the internal thread center line c1 of the nut 1 to both sides from the distal end side, along the sides of the nut 1 "U" The convex portion 4 of the nut 1 is a supporting tongue piece at the one end side having the bent portions 8 and 8 ′ substantially in the front half in the insertion direction of the nut 1. 2 is a nut body fixed by means such as welding, adhesion, press-fitting, screwing, caulking so that at least a part of the opening 6 is fitted.
[0012]
The opening 6 of the support tongue 2 has a shape that sufficiently accommodates the convex portion 4 of the nut 1 on the side having the bent portions 8, 8 ′, but is smaller than the convex portion 4 on the other side. May be provided so that the convex portion 4 cannot be completely accommodated in the opening 6.
[0013]
An inclined surface 10 such as a curved surface or a tapered surface may be provided on the side in contact with the hollow member on the rear end side short side when viewed from the insertion direction of the nut 1.
[0014]
According to the present invention, the surface of the nut 1 that is in contact with the back surface of the hollow member is covered with the thin support tongue 2 to which the lower half is fixed, so that there is a slight step with the upper half that is not covered. In the case where the step becomes any obstacle, a thick portion 11 corresponding to the thickness of the support tongue 2 may be provided in the upper half of the nut 1.
[0015]
When using the nut body of the present invention, the support tongue piece 2 is bent in the shape of a letter “he” and the lower part provided on the hollow member is pressed with the finger so that the part separated from the nut 1 is in contact with the nut 1. Insert into hole 12 (FIG. 3).
[0016]
After completely inserting the nut 1 into the hollow portion, the enlarged portion 7 of the supporting tongue 2 is pulled forward, the convex portion 4 is fitted into the lower hole 12 (FIG. 4), and then the supporting tongue 2 is bent downward. (FIG. 5).
[0017]
In this process, since the nut body of the present invention has the bent portions 8 and 8 ′ bent in a “U” shape, even if the enlarged portion 7 of the supporting tongue 2 is strongly drawn, the bent portion It is possible to prevent the tip from being bent further than 9.
[0018]
In this state, even if the support tongue 2 is sufficiently bent downward, the support tongue 2 repels without being brought into close contact with the hollow member due to the restoring elasticity of the support tongue 2, and the nut 1 fixed to the support tongue 2 has a gap. As shown in FIG. 5, the nut 1 does not stand upright as shown in FIG. 5. If the bolt is screwed in this state, the problem of being unable to be screwed due to “meshing” tends to occur.
[0019]
However, since the bent enlarged portion 7 is hooked in a state of being lifted from the hollow member due to its elasticity (shown in FIG. 5), as shown in FIG. 6, the component 14 to be fixed is pushed against the hollow member. When the contact is made, the enlarged portion 7 is pushed in the direction of f1, and the nut 1 to which the substantially front half (substantially lower half in FIG. 5) is connected and fixed to the support tongue 2 is moved by the movement of the enlarged portion 7. In conjunction with this, it is pulled up in the direction of f2 and stands upright, and when the bolt 15 is inserted and screwed in, an “engagement” is less likely to occur.
[0020]
Thus, it has the effect that bolts, such as components, can be easily fixed by inserting the nut body of the present invention from the surface side to the hollow member which cannot be reached.
[0021]
The bent portions 9 and 9 ′ of the support tongue 2 are positioned at an arbitrary length between the center line c 1 of the female screw and the edge c 2 of the inner peripheral surface of the female screw, for example, an enlarged portion of the support tongue 2. 7 is provided at or near the intersection point a between the width of the portion excluding 7 and the pilot hole 12 shown in FIG. 2, the outer edge of the support tongue 2 is bent down when the support tongue 2 shown in FIG. 5 is bent downward. Since the nut body 1 can be prevented from being pulled downward by being in contact with the peripheral wall of the nut 1 and at the same time the left and right sides of the female threaded portion of the nut 1 are supported when the bolt is screwed in, the nut 1 is at the tip of the bolt. It has the effect of preventing "meshing" because it is difficult to tilt even when pressed, and has the effect of being able to select the smallest pilot hole diameter compared to the size of the nut. A bar with a female thread called In order to compare with the nut body of Fig. 7, for example, those disclosed in Japanese Patent Publication No. 36-18855 shown in FIG. 7 and US Pat. No. 3,605,547 shown in FIG. Therefore, the support tongue piece of the present invention is in contact with the peripheral wall of the pilot hole at the intersection point a in FIG. There is no effect such as preventing the inclination of the nut by supporting the left and right of the female thread portion when inserting the bolt while preventing the nut from moving downward.
[0022]
The opening 6 of the support tongue 2 has a shape that sufficiently accommodates the convex portion 4 of the nut 1 on the side having the bent portions 8, 8 ′, but is smaller than the convex portion 4 on the other side. When the convex part 4 cannot be completely accommodated in the opening 6, the supporting tongue piece 2 shown in FIG. 3 is pressed with the finger 1 in contact with the nut 1, and the prepared hole is provided in the hollow member. At the time of insertion, the support tongue 2 is inserted into the narrow pilot hole so that the protrusion 4 is obstructed and the support tongue cannot be completely adhered to the nut 1 so that the support tongue is bent. It is released from restraint by the pilot hole and repels and moves slightly in the upright direction, and has an effect that the nut 1 can be easily rotated in the upright direction when the enlarged portion 7 of the support tongue 2 is pulled.
[0023]
When an inclined surface 10 such as a curved surface or a tapered surface is provided on the side in contact with the hollow member on the rear end side short side when viewed from the insertion direction of the nut 1, the nut body of the present invention is inserted into the hollow member and then pulled. Since the inclined surface 10 first contacts and rubs against the back surface of the hollow member, the nut 1 can be easily rotated in the upright direction by providing the inclined surface.
[0024]
【The invention's effect】
As described above, according to the present invention, in industrial equipment or the like, when fixing a part to a hollow portion with a bolt or assembling the equipment, it is not necessary to fix the nut in advance by means such as welding or the like. Even if it is not prepared, a special bar-like support tool or the like is not required, and a nut can be inserted and fixed using bolts only by work from the front side.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a nut body of the present invention.
FIG. 2 is a front view after insertion into the pilot hole.
FIG. 3 is a partial cross-sectional view of a side surface showing a state of insertion into the pilot hole.
4 is a partial cross-sectional view of a side surface showing a state immediately after being inserted into the pilot hole. FIG.
FIG. 5 is a partial cross-sectional view of a side surface showing a state where the support tongue piece is bent.
FIG. 6 is a partial cross-sectional view of a side surface showing a state in which a mounting part is screwed with a bolt.
FIG. 7 is a reference diagram showing a conventional example, Japanese Patent Publication No. 36-18855.
FIG. 8 is a reference diagram showing a conventional example, US Pat. No. 3,605,547.
[Explanation of symbols]
1. Nut 2. 2. Supporting tongue piece Female screw 4. 4. convex part 5. Side wall inclined part Opening 7. Enlarged part 8, 8 '. Bent portions 9, 9 '. Bent part 10. Inclined surface
11. Thick part 12. Pilot hole

Claims

A plate-like nut metallic rectangular, composed of a metal thin plate retaining tongues having elasticity one end is fixed to the nut, inserted lengthwise prepared hole provided in the hollow member a nut used in the nut has a female thread penetrating in the thickness direction, the convex portion to be fitted to the prepared hole of the hollow member around the opening of the internal thread of retaining tongues are secured side, the nut When the insertion direction side of the body is the front end and the other side is the rear end, the support tongue has an opening that accommodates the convex part of the nut in the middle part, and a fixed end that is fixed to the nut at the front end part. liberated from the plate-like nut followed a bent portion bent in shape of "to" provided, the fixed end distal end of the inner circumferential surface of the internal thread center line and the female screw of the nut to both sides from the distal end in length to any position between the folding along the sides of the nut-shaped "U" It has a bent part, and one end side with the bent part is fixed to the front half of the nut in the insertion direction of the nut so that the convex part of the nut fits at least partially into the opening of the support tongue. It is a nut body.

A plate-like nut metallic rectangular, composed of a metal thin plate retaining tongues having elasticity one end is fixed to the nut, inserted lengthwise prepared hole provided in the hollow member a nut used in the nut has a female thread penetrating in the thickness direction, the convex portion to be fitted to the prepared hole of the hollow member around the opening of the internal thread of retaining tongues are secured side, the nut the insertion direction of the body tip, when the rear end of the other side, the support tongue and the opening for accommodating the protruding portion of the nut to an intermediate portion, the anchoring end to fix the nut to the tip provided, the fixed Next to the end, a bent portion that is bent in the shape of a “he” that is released from the nut is provided, and a width larger than the diameter of the pilot hole provided in the hollow member is provided at the rear end portion across the opening of the intermediate portion. the enlarged portion having provided, the fixed end and the female screw center line of the nut to both sides from the front end side Mene In any length up to a position between the tip end of the inner peripheral surface of, along the side of the nut has a shape in the bent bent part of the "U", one end having a bent portion In the nut body, the convex portion of the nut is fixed to the opening of the support tongue so that at least a part thereof is fitted to the front half of the nut.

A plate-like nut metallic rectangular, composed of a metal thin plate retaining tongues having elasticity one end is fixed to the nut, inserted lengthwise prepared hole provided in the hollow member a nut used in the nut has a female thread penetrating in the thickness direction, the convex portion to be fitted to the prepared hole of the hollow member around the opening of the internal thread of retaining tongues are secured side, the nut When the insertion direction side of the body is the front end and the other side is the rear end, a thick portion corresponding to the thickness of the support tongue is provided at the rear end of the nut having the convex portion, and the support tongue is intermediate an opening for accommodating the protruding portion of the nut part, the anchoring end to fix the nut provided at the distal end portion, a bent portion bent in shape of "to" liberated from the nut Following this fixing end is provided, the rear end portion across the opening of the intermediate portion, having a width greater than the diameter of the prepared hole provided in the hollow member The provided majority, the fixed end in the length up to any position between the tip end of the inner circumferential surface of the internal thread center line and the female screw of the nut to both sides from the distal end side along the side surface of the nut It has a bent part that is bent in the shape of a `` U '', and one end side of the bent part is approximately the front half in the direction of inserting the nut, and the convex part of the nut is at least partially open to the opening of the supporting tongue. It is a nut body fixed so as to be fitted.

A plate-like nut metallic rectangular, composed of a metal thin plate retaining tongues having elasticity one end is fixed to the nut, inserted lengthwise prepared hole provided in the hollow member a nut used in the nut has a female thread penetrating in the thickness direction, the convex portion to be fitted to the prepared hole of the hollow member around the opening of the internal thread of retaining tongues are secured side, the nut the insertion direction of the body tip, when the rear end of the other side, the support tongue and the opening for accommodating the protruding portion of the nut to an intermediate portion, the anchoring end to fix the nut to the tip provided, the fixed Next to the end, there is a bent portion bent in the shape of a “he” that is released from the nut, and both ends of the fixed end are connected to the center of the female thread center line of the nut and the distal end of the inner peripheral surface of the female thread. folding in length to the desired position, along the sides of the nut-shaped "U" between the A bent portion that is bent and further bent toward the back side of the nut, and that one end side of the bent portion is approximately the front half in the direction of inserting the nut, and the convex portion of the nut is at least at the opening of the supporting tongue. It is a nut body that is fixed so that a part thereof is fitted.