JPS6233448B2 - - Google Patents
Info
- Publication number
- JPS6233448B2 JPS6233448B2 JP1393883A JP1393883A JPS6233448B2 JP S6233448 B2 JPS6233448 B2 JP S6233448B2 JP 1393883 A JP1393883 A JP 1393883A JP 1393883 A JP1393883 A JP 1393883A JP S6233448 B2 JPS6233448 B2 JP S6233448B2
- Authority
- JP
- Japan
- Prior art keywords
- nut member
- hole
- spring nut
- spring
- male screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Bolts, Nuts, And Washers (AREA)
- Valve Device For Special Equipments (AREA)
- Materials For Medical Uses (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は、線材を密着コイル状に巻回して雌ネ
ジを形成したナツトに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nut having a female thread formed by winding a wire into a tight coil.
ボルト・ナツトによる固着手段では、ボルトあ
るいはナツトを緩めることにより簡単に外すこと
ができる利点があるが、盗難を防止するにはこれ
が欠点となる。盗難を防止するためには溶接等の
固着手段を使えばよいが、ボルト・ナツトに比し
て手間がかかる上に、溶接等を適用できない場合
がある。 Fixing means using bolts and nuts has the advantage that it can be easily removed by loosening the bolt or nut, but this is a disadvantage in preventing theft. In order to prevent theft, fixing means such as welding may be used, but it is more time-consuming than bolts and nuts, and welding or the like may not be applicable in some cases.
そこで、簡単に固定できしかも容易に外すこと
のできない固着手段が要望されていた。 Therefore, there has been a need for a fixing means that can be easily fixed and cannot be easily removed.
本発明は上記事情に鑑みてなされたもので、そ
の目的とするところは、一旦取付けたら外そうと
しても空回りして外すことのできないナツトを提
供することである。 The present invention has been made in view of the above circumstances, and its object is to provide a nut that, once attached, cannot be removed because it spins idly even if an attempt is made to remove it.
以下本発明の一実施例を図面を参照して説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
図中符号１はナツト本体で、方形ブロツク状に
形成されている。このナツト本体１の中央部には
貫通孔２が形成されていて、この貫通孔２の一端
部（ナツト本体１の表面側）には抜脱阻止のため
の段部２ａが形成されている。 Reference numeral 1 in the figure is the nut body, which is formed into a rectangular block shape. A through hole 2 is formed in the center of the nut body 1, and a step 2a is formed at one end of the through hole 2 (on the surface side of the nut body 1) to prevent the nut from coming off.
貫通孔２内には、断面円形状の鋼線を密着コイ
ル状に巻回したスプリングナツト部材３が挿入さ
れている。このスプリングナツト部材３の外径は
貫通孔２の内径よりも若干小さく設定され、また
その軸線方向の長さも貫通孔２の長さよりも若干
短かく設定されている。すなわち、スプリングナ
ツト部材３は貫通孔２内において伸長、拡径可能
になつている。 A spring nut member 3 is inserted into the through hole 2 and is made of a steel wire having a circular cross section wound in a tightly coiled manner. The outer diameter of the spring nut member 3 is set to be slightly smaller than the inner diameter of the through hole 2, and its length in the axial direction is also set to be slightly shorter than the length of the through hole 2. That is, the spring nut member 3 can be expanded and expanded in diameter within the through hole 2.
また、スプリングナツト部材３のピツチP1は雄
ネジ４のピツチP2より僅かに小さく設定されてい
る。従つて、雄ネジ４を螺合したとき、スプリン
グナツト部材３は密着巻の状態から、ピツチP1と
P2の差に相当して軸線方向に引き伸ばされると共
に、外径が僅かに拡がる。また、一旦螺合した雄
ネジ４を緩めようとすると、スプリングナツト部
材３が雄ネジ４のネジ溝４ａに食い込む作用を
し、これを阻止する。 Further, the pitch P 1 of the spring nut member 3 is set to be slightly smaller than the pitch P 2 of the male screw 4. Therefore, when the male screw 4 is screwed together, the spring nut member 3 changes from the tightly wound state to the pitch P1 .
It is elongated in the axial direction corresponding to the difference in P 2 and its outer diameter expands slightly. Further, when an attempt is made to loosen the male screw 4 once screwed together, the spring nut member 3 acts to bite into the thread groove 4a of the male screw 4, thereby preventing this.
スプリングナツト部材３の一端部３ａは、ナツ
ト本体１の裏面側に貫通孔２と連通して形成した
係止孔５に係脱自在に係止されている。この係止
状態は次のように設定されている。すなわち、雄
ネジ４を螺合すると、雄ネジ４からスプリングナ
ツト部材３に第２図に示す矢印Ａ方向の力が作用
するので、この力により一端部３ａが係止孔５に
さらに進入する如く係止されている。雄ネジ４を
緩めようとすると、雄ネジ４からスプリングナツ
ト部材３に同図に示す矢印Ｂ方向の力が作用す
る。この場合、前述の如くスプリングナツト部材
３が雄ネジ４の緩み方向の回転を阻止するが、矢
印Ｂ方向の力がこの抗力以上になると一端部３ａ
が係止孔５から抜け出ることになる。 One end 3a of the spring nut member 3 is removably locked in a locking hole 5 formed on the back side of the nut body 1 so as to communicate with the through hole 2. This locked state is set as follows. That is, when the male screw 4 is screwed together, a force is applied from the male screw 4 to the spring nut member 3 in the direction of arrow A shown in FIG. It is locked. When an attempt is made to loosen the male screw 4, a force in the direction of arrow B shown in the figure is applied from the male screw 4 to the spring nut member 3. In this case, as described above, the spring nut member 3 prevents the male screw 4 from rotating in the loosening direction, but if the force in the direction of arrow B exceeds this resistance force, the one end 3a
will come out of the locking hole 5.
本発明ではこの点に着目して一端部３ａの係止
孔５に対する係止度合を設定している。すなわ
ち、雄ネジ４に緩み方向に所定以上の力を作用し
たとき一端部３ａが係止孔５から抜け出るように
している。 In the present invention, the degree of engagement of the one end portion 3a with respect to the engagement hole 5 is set by paying attention to this point. That is, when a predetermined force or more is applied to the male screw 4 in the direction of loosening, the one end 3a comes out of the locking hole 5.
一端部３ａが係止孔５から抜け出ると、スプリ
ングナツト部材３は貫通孔２内において空回りす
ることになり、従つて、雄ネジ４をいくら緩み方
向に回転させても空回りするだけでナツト本体１
から外すことはできない。 When the one end portion 3a comes out of the locking hole 5, the spring nut member 3 will idle in the through hole 2. Therefore, no matter how much the male screw 4 is rotated in the loosening direction, the nut body 1 will only rotate idle.
cannot be removed from it.
なお、ナツト本体１を緩み方向に回転させても
その作用は同じである。 Note that even if the nut body 1 is rotated in the loosening direction, the effect is the same.
以上説明したように本発明によれば、線材をほ
ぼ密着コイル状に巻回してなり、そのピツチが雄
ネジのピツチよりも僅かに小さいスプリングナツ
ト部材を、軸線方向に抜脱するのを阻止する段部
を有したナツト本体の貫通孔内に挿入し、かつ該
スプリングナツト部材の端部をナツト本体の回り
止め用の係止孔に係脱自在に係止して、スプリン
グナツト部材に螺合した雄ネジあるいはナツト本
体を緩み方向に所定以上の力で回転させたとき、
スプリングナツト部材の端部が係止孔から外れて
スプリングナツト部材が貫通孔内において空回り
するように構成しているので、一旦雄ネジを螺合
したらこれを外すことができず、溶接等の手段を
用いなくても盗難等を有効に阻止できる。また、
雄ネジを螺合するときには通常のナツトと何んら
変わらないので、手間がかからず、また緩み止め
の作用もする。 As explained above, according to the present invention, the spring nut member, which is formed by winding a wire material in a substantially tightly coiled manner and whose pitch is slightly smaller than that of the male thread, is prevented from being pulled out in the axial direction. The spring nut member is inserted into a through hole of a nut body having a stepped portion, and the end of the spring nut member is removably engaged with a locking hole for preventing rotation of the nut body, and is screwed into the spring nut member. When the male screw or nut body is rotated with more than a specified force in the loosening direction,
Since the end of the spring nut member is disengaged from the locking hole and the spring nut member is configured to rotate idly within the through hole, once the male screw is screwed together, it cannot be removed, and it cannot be removed by means such as welding. Theft, etc. can be effectively prevented even without the use of. Also,
When screwing together a male thread, it is no different from a normal nut, so it does not take much time and also works to prevent loosening.
図面は本発明の一実施例を示すもので、第１図
は半裁断面図、第２図は第１図の−線矢視
図、第３図は使用状態の説明図である。
１……ナツト本体、２……貫通孔、２ａ……段
部、３……スプリングナツト部材、３ａ……端
部、４……雄ネジ、５……係止孔、P1，P2……ピ
ツチ。
The drawings show an embodiment of the present invention, in which FIG. 1 is a half-cut sectional view, FIG. 2 is a view taken along the - line in FIG. 1, and FIG. 3 is an explanatory diagram of the state of use. DESCRIPTION OF SYMBOLS 1... Nut body, 2... Through hole, 2a... Step part, 3... Spring nut member, 3a... End part, 4... Male thread, 5... Locking hole, P 1 , P 2 ... ...Pitsuchi.
Claims (1)
のピツチが雄ネジのピツチよりも僅かに小さいス
プリングナツト部材を、軸線方向に抜脱するのを
阻止する段部を有したナツト本体の貫通孔内に挿
入し、かつ該スプリングナツト部材の端部をナツ
ト本体の回り止め用の係止孔に係脱自在に係止し
て、スプリングナツト部材に螺合した雄ネジある
いはナツト本体を緩み方向に所定以上の力で回転
させたとき、スプリングナツト部材の端部が係止
孔から外れてスプリングナツト部材が貫通孔内に
おいて空回りするように構成したことを特徴とす
るナツト。1. A through hole in the nut body that has a stepped portion that prevents a spring nut member, which is formed by winding a wire rod into a nearly tightly coiled shape and whose pitch is slightly smaller than the pitch of the male thread, from being pulled out in the axial direction. The end of the spring nut member is removably locked in the locking hole for preventing rotation of the nut body, and the male screw screwed into the spring nut member or the nut body is loosened. 1. A nut characterized in that, when rotated with a force greater than a predetermined value, an end of the spring nut member is disengaged from a locking hole and the spring nut member freely rotates within the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393883A JPS59140916A (en) | 1983-01-31 | 1983-01-31 | Nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393883A JPS59140916A (en) | 1983-01-31 | 1983-01-31 | Nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59140916A JPS59140916A (en) | 1984-08-13 |
| JPS6233448B2 true JPS6233448B2 (en) | 1987-07-21 |
Family
ID=11847139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1393883A Granted JPS59140916A (en) | 1983-01-31 | 1983-01-31 | Nut |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59140916A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002061623A (en) * | 2000-08-15 | 2002-02-28 | Ahresty Corp | Stopper for panel fixture |
| JP2017009104A (en) * | 2015-06-18 | 2017-01-12 | 利宣 岩崎 | Easily removable nut |
-
1983
- 1983-01-31 JP JP1393883A patent/JPS59140916A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59140916A (en) | 1984-08-13 |
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