JPS6326571Y2

JPS6326571Y2 -

Info

Publication number: JPS6326571Y2
Application number: JP6565684U
Authority: JP
Priority date: 1984-05-04
Filing date: 1984-05-04
Publication date: 1988-07-19
Also published as: JPS60177318U

Description

【考案の詳細な説明】本考案はねじを用いて部品を固着するための鬼
目ナツトに関するものである。[Detailed Description of the Invention] The present invention relates to a blind nut for fixing parts using screws.

従来の鬼目ナツトは下孔に打ち込まれたとき全
周にわたつて略均一に突出部が存在していた。従
つて、例えばスピーカをバツフルボードに固着す
る場合等には下孔とスピーカ取付用孔とが接近し
て設けられているため鬼目ナツトを下孔に打ち込
んだ場合、突出部に押されて下孔の部品取付孔側
の外壁が破損し音ビレ等の原因になる欠点があつ
た。 When a conventional Onime nut is driven into a prepared hole, a protruding portion exists almost uniformly over the entire circumference. Therefore, when fixing a speaker to a buttful board, for example, the pilot hole and the speaker mounting hole are provided close to each other, so when a blind nut is driven into the pilot hole, it is pushed by the protrusion and the speaker mounting hole is pushed into the pilot hole. The outer wall on the side of the parts mounting hole was damaged, which caused noise, etc.

本考案の鬼目ナツトは下孔に打ち込まれたとき
ストツパーと成すつば部の少なくとも一部を小と
成し、他部を大と成すとともに、下孔に打ち込ま
れる部分の内径にねじを有するねじ部の外壁に、
ねじ部が下孔に打ち込まれたとき、下孔の内壁に
食い込む突出部がつば部の大なる側にあり、つば
部の小なる側には無い構成に成すものである。 The onime nut of the present invention has at least a part of the flange that forms a stopper when driven into the pilot hole small, the other part is large, and the part that is driven into the pilot hole has a thread on its inner diameter. On the outer wall of the
When the threaded portion is driven into the pilot hole, the protrusion that bites into the inner wall of the pilot hole is located on the larger side of the flange and not on the smaller side of the flange.

しかるに、部品が取り付けられる孔と下孔が接
近し肉厚が薄くなる側につば部の小なる部がくる
ように、突出部が肉厚の厚い側にくるように鬼目
ナツトを打ち込む。この場合肉厚が薄い側には突
出部が無い状態で打ち込まれるので肉厚が薄い側
に当接しながら肉厚の厚い側に突出部が喰い込み
固着される構成に成すものである。 However, the hole where the part will be attached and the pilot hole are close to each other, and the small part of the brim is on the side where the wall thickness is thinner, and the nut is driven in so that the protruding part is on the thicker side. In this case, since the protrusion is driven into the thinner side without the protrusion, the protrusion bites into the thicker side and is fixed while abutting the thinner side.

本考案を一実施例により説明する。 The present invention will be explained by way of an example.

第１図は本考案の一実施例の鬼目ナツトを打ち
込んだ状態を示す図と第２図はそれにスピーカを
取付けた場合を示す要部の断面図である。スピー
カを取付けるバツフルボード１には例えば合板等
が用いられる。 FIG. 1 is a view showing a state in which a nut has been driven in according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the main part showing a case where a speaker is attached to it. For example, plywood or the like is used for the double board 1 on which the speaker is attached.

スピーカ取付け用孔３に接近して鬼目ナツト４
を打ち込み固着するための下孔２が設けられ下孔
２とスピーカ取付け用孔３との間隔が小さくその
肉厚は薄くなつている。 Close the speaker mounting hole 3 and close the hole 4.
A pilot hole 2 for driving and fixing is provided, and the distance between the pilot hole 2 and the speaker mounting hole 3 is small, and the wall thickness thereof is thin.

本考案の鬼目ナツト４はつば部５の一部を小と
成すつば部５′を有しつば部５′と反対側のつば部
５はつば部５′に比べつば部を大に成すとともに
つば部５側のネジ部６の外壁６′には下孔２の内
壁２ａに食い込む突出部７を設け、つば部５′側
のネジ部６の外壁には突出部７が無い構成に成つ
ている。 The onime nut 4 of the present invention has a brim 5' that is a small part of the brim 5, and the brim 5 on the opposite side to the brim 5' has a large brim compared to the brim 5'. The outer wall 6' of the threaded part 6 on the side of the collar 5 is provided with a protrusion 7 that bites into the inner wall 2a of the pilot hole 2, and the outer wall of the threaded part 6 on the side of the collar 5' has no protrusion 7. There is.

しかるに下孔２に鬼目ナツト４を打ち込んだと
きに突出部７が下孔２の内壁２ａに喰い込み、下
孔２の肉薄側はネジ部６の外壁を滑るので取付け
用の孔３と下孔２との間の肉薄側が割れるおそれ
が無くなる。 However, when the blind nut 4 is driven into the pilot hole 2, the protrusion 7 bites into the inner wall 2a of the pilot hole 2, and the thin side of the pilot hole 2 slides on the outer wall of the threaded part 6, so that there is no connection between the mounting hole 3 and the bottom. There is no possibility that the thin side between the holes 2 and 2 will break.

第２図を示すようにスピーカ１１をボルト１２
で鬼目ナツト４に固着するとバツフルボード１に
設ける取付用の孔３を大きく開ける事ができスピ
ーカ取付けの場合には特にエツジ部の音の反射に
よる再生特性への影響を少なくすることができ
る。 Connect the speaker 11 to the bolt 12 as shown in Figure 2.
When it is fixed to the onime nut 4, the mounting hole 3 provided in the buttful board 1 can be made larger, and when installing a speaker, it is possible to reduce the influence on the reproduction characteristics due to sound reflection at the edge part in particular.

上記のように本考案による鬼目ナツトを用いる
と部品を挿入し取付ける孔と鬼目ナツトを取付け
る下孔との間の肉厚を特に薄くすることができ
る。 As described above, by using the blind eye nut according to the present invention, the wall thickness between the hole in which the part is inserted and attached and the pilot hole in which the blind eye nut is installed can be made particularly thin.

[Brief explanation of drawings]

第１図は本考案の一実施例を示す図、第２図は
本考案の一実施例を示す要部の断面図である。１……バツフルボード、２……下孔、２ａ……
内壁、３……取付用の孔、４……鬼目ナツト、
５，５′……つば部、６……ネジ部、６′……外
壁、７……突出部、１１……スピーカ、１２……
ボルトである。 FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a sectional view of essential parts of the embodiment of the present invention. 1... Batsuful board, 2... Pilot hole, 2a...
Inner wall, 3... Mounting hole, 4... Onime Natsuto,
5, 5'...Brim part, 6...Screw part, 6'...Outer wall, 7...Protrusion part, 11...Speaker, 12...
It's a bolt.

Claims

[Scope of utility model registration request]

In a blind nut that is driven into a prepared hole and fixed, at least a portion of the collar portion that forms a stopper when driving is made small and the other portion is made large, and a threaded portion that is driven into the prepared hole and has a thread on its inner diameter. 1. A blind nut having a protruding part that bites into the pilot hole when driven into the outer wall of the threaded part, the protruding part being provided on the larger side of the flange part.