JP2776792B2 - Nut loosening stopper - Google Patents
Nut loosening stopperInfo
- Publication number
- JP2776792B2 JP2776792B2 JP8116860A JP11686096A JP2776792B2 JP 2776792 B2 JP2776792 B2 JP 2776792B2 JP 8116860 A JP8116860 A JP 8116860A JP 11686096 A JP11686096 A JP 11686096A JP 2776792 B2 JP2776792 B2 JP 2776792B2
- Authority
- JP
- Japan
- Prior art keywords
- nut
- circular hole
- bolt
- inner peripheral
- peripheral edge
- 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 - Lifetime
Links
Landscapes
- Forging (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明はナット緩み止め具
に関するもので、特に緩みが進行するに従い、ボルトの
螺部に食い込んでボルトを締め付け、その回転を阻止す
るようにしたものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut loosening stopper, and more particularly to a nut which bites into a threaded portion of a bolt and tightens the bolt to prevent its rotation as the loosening progresses.
【０００２】[0002]
【従来の技術】ナットの緩み止め具に関しては、ダブル
ナットを初めとして種々のものが提供されている。2. Description of the Related Art Various types of nuts are provided, including double nuts.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、これま
でに提供されている種々の緩み止め具は、構造が複雑で
コストが高く、軽便性に欠ける。However, the various types of locking devices provided so far have complicated structures, are expensive, and lack convenience.
【０００４】そこで、この発明は構造簡単でコスト安価
にして軽便に利用できるナット緩み止め具を提供する。Accordingly, the present invention provides a nut loosening stopper which is simple in structure, inexpensive and can be used easily.
【０００５】[0005]
【課題を解決するための手段】この発明にかかるナット
緩み止め具は、ナットを螺合するボルトの螺部における
谷部の直径よりも大きくて山部の直径よりも小さい直径
の円孔を中心部に穿設するとともに、該円孔の内周縁が
前記谷部の１ピッチに相当するように切欠部を介して螺
旋状に形成され、かつ、該円孔を穿設した部位が円錐状
の傾斜面である板体からなり、該円錐状の傾斜面の周縁
部に前記ナットと同じ六面の側壁部が交叉して軸方向へ
一体形成されていることを特徴とする。そして前記円孔
の内周縁に粗面部が形成されていることを特徴とする。 SUMMARY OF THE INVENTION A nut loosening stopper according to the present invention is formed by centering a circular hole having a diameter larger than a diameter of a valley portion and smaller than a diameter of a mountain portion in a thread portion of a bolt for screwing the nut. At the same time, the inner peripheral edge of the circular hole is formed spirally through a notch so as to correspond to one pitch of the valley, and the portion where the circular hole is drilled has a conical shape. Ri Do from the plate member is an inclined surface, the periphery of the conical inclined surfaces
The same six side walls as the nut intersect with the nut
Characterized that you have been integrally formed. And the circular hole
Is characterized in that a roughened surface portion is formed on the inner peripheral edge thereof.
【０００６】したがって、側壁部にスパナ等を当てて緩
み止め具を回動し、円錐状の傾斜面がナットの頭面と同
一面になる如く緩み止め具をボルトに螺合すると、円孔
の内径がボルトの螺部の谷部の直径に近づいてその全周
でボルトに圧接し、とりわけ、粗面部が形成されていれ
ばそれがボルトに圧接するために、ボルトと緩み止め具
とは楔合して一体化する。 Therefore, a wrench or the like is applied to the side wall to loosen it.
Rotate the stopper so that the conical slope is flush with the head of the nut.
Screw the loosening stopper onto the bolt so that it becomes one side, and a circular hole
The inner diameter of the bolt approaches the diameter of the valley of the thread of the bolt and its entire circumference
With the bolt, especially if the roughened surface is formed.
If it presses against the bolt, the bolt and the locking stopper
And are integrated with each other.
【０００７】[0007]
【発明の実施の形態】以下この発明の実施の形態を図に
基づき説明する。図１に示すように、締結すべき二つの
部材１，２を貫通する孔３に挿通したボルト４にナット
５が螺合し、ナット５の外側にナット緩み止め具６がボ
ルト４に螺合している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a nut 5 is screwed into a bolt 4 inserted into a hole 3 passing through the two members 1 and 2 to be fastened, and a nut loosening stopper 6 is screwed onto the bolt 4 outside the nut 5. doing.
【０００８】ナット緩み止め具６は六面の側壁部７を周
囲に折り曲げ形成した六角形の板体８を有し、図２，３
に示すように、その中心部にボルト４の螺部９の谷部１
０の直径よりも大きくて山部１７の直径よりも小さい直
径を有する円孔１１が形成され、かつ、円孔１１の一部
に切欠部１２が形成されている。円孔１１の内周縁１３
はボルト４の螺部９の１ピッチ分に係合するように螺旋
状に形成され、この切欠部１２の片側１４とこれに対す
る他の片側１５とは１ピッチ分ずれていて同一平面に存
しない。したがって、円孔１１を穿設した板体８は所定
の角度θ1で中心に向けて傾斜している。θ1は約５〜６
０度である。The nut loosening stopper 6 has a hexagonal plate body 8 formed by bending a hexagonal side wall portion 7 around the periphery.
As shown in the figure, the valley 1 of the screw 9 of the bolt 4
A circular hole 11 having a diameter larger than the diameter of 0 and smaller than the diameter of the peak portion 17 is formed, and a cutout 12 is formed in a part of the circular hole 11. Inner peripheral edge 13 of circular hole 11
Is formed in a spiral shape so as to engage with the thread portion 9 of the bolt 4 for one pitch, and one side 14 of the notch portion 12 and the other side 15 thereof are shifted by one pitch and do not exist on the same plane. . Therefore, the plate member 8 bored a circular hole 11 is inclined toward the center at an angle theta 1. θ 1 is about 5 to 6
0 degrees.
【０００９】そして、図２に示すように、円孔１１の内
周縁１３には側壁部７側において、ギザギザや凸凹又は
歯車状等の粗面部１６が形成されている。この粗面部１
６は内周縁１３の上面側に形成される。なお、この粗面
部１６に代え、図４に示すように、ナット緩み止め具６
の内周縁１３を刃状に形成してもよい。すなわち、図示
のように、内周縁１３の上面に山部１７に食い込むこと
ができる所定角度θ2の刃部１８を形成するのである。
θ2は約３０〜１２０度である。As shown in FIG. 2, on the inner peripheral edge 13 of the circular hole 11, a rough surface 16 such as a jagged, uneven, or gear shape is formed on the side wall 7 side. This rough surface portion 1
6 is formed on the upper surface side of the inner peripheral edge 13. Note that, instead of the rough surface portion 16, as shown in FIG.
May be formed in the shape of an edge. That is, as illustrated, is to form a predetermined angle theta 2 of the blade section 18 which can bite into the ridges 17 on the upper surface of the inner peripheral edge 13.
θ 2 is about 30 to 120 degrees.
【００１０】したがって、ナット５の外側でボルト４の
螺部９にナット緩み止め具６の円孔１１を粗面部１６が
外側となるように嵌合して側壁部７にスパナ等の工具を
当てて回転し、図５に示すように、ナット５に密着させ
て螺合すると、円孔１１の内周縁１３が螺部８の谷部１
０に進入して山部１７の斜面に粗面部１６が接触する。
また、内周縁１３に刃部１８を形成してあるときは、そ
の刃部１８が山部１７に食い込み始める。Therefore, the circular hole 11 of the nut loosening stopper 6 is fitted to the screw portion 9 of the bolt 4 outside the nut 5 so that the rough surface portion 16 is on the outside, and a tool such as a spanner is applied to the side wall portion 7. As shown in FIG. 5, when the screw is brought into close contact with the nut 5 and screwed into the nut 5, the inner peripheral edge 13 of the circular hole 11 is
When it enters 0, the rough surface 16 contacts the slope of the peak 17.
When the blade 18 is formed on the inner peripheral edge 13, the blade 18 starts to bite into the peak 17.
【００１１】そこで、ボルト４がナット５に矢示Ｘ方向
へ移動して沈み込み、又はナット５を部材１，２から離
す力が作用することにより、ナット５の緩みが始まろう
とすると、粗面部１６がナット５側に押されることによ
り板体８と側壁部７の交点Ｃを中心として板体８がナッ
ト５側へ回転することにより（矢示ａ参照）、その傾斜
角度θが徐々に小さくなり、ついには板体８がナット５
の頭面と同一平面になると円孔１１の内径が小さくな
り、内周縁１３の粗面部１６が山部１７に圧接し又は刃
部１８が山部１７に食い込むこととなる。Then, when the bolt 4 moves in the direction of the arrow X and sinks into the nut 5, or when the nut 5 starts to loosen due to a force acting to separate the nut 5 from the members 1 and 2, the bolt 5 is roughened. When the plate 16 is pushed toward the nut 5 and the plate 8 rotates toward the nut 5 around the intersection C between the plate 8 and the side wall 7 (see arrow a), the inclination angle θ is gradually reduced. Finally, the plate 8 is
The inner surface of the circular hole 11 becomes smaller when
As a result, the rough surface 16 of the inner peripheral edge 13 comes into pressure contact with the peak 17, or the blade 18 bites into the peak 17.
【００１２】そのため、ボルト４の緩みが進捗するに連
れてナット緩み止め具１はボルト４と楔合して一体化す
ることとなり、緩み止め具１はナット５を抑えることと
なるから、ナット５は緩むことがない。Therefore, as the bolt 4 is loosened, the nut loosening stopper 1 is wedge-engaged with the bolt 4 to be integrated, and the loosening stopper 1 holds down the nut 5. Never loosen.
【００１３】なお、より効果的な緩み止めを達成するに
は、図５において、ナット５の外側でボルト４の螺部９
にナット緩み止め具６の円孔１１を粗面部１６が外側と
なるように嵌合して側壁部７にスパナ等の工具を当てて
回転し、板体８がナット５の頭面と平行になるまで締め
付けることにより、予め、粗面部１６を山部１７に圧接
し、又は、刃部１８を山部１７に食い込ませておけばよ
い。In order to achieve a more effective loosening prevention, in FIG.
The nut 8 is fitted to the circular hole 11 of the nut loosening stopper 6 so that the rough surface portion 16 is on the outside, and a tool such as a spanner is applied to the side wall portion 7 and rotated. By tightening as far as possible, the rough surface portion 16 may be pressed against the peak portion 17 or the blade portion 18 may be cut into the peak portion 17 in advance.
【００１４】[0014]
【発明の効果】以上説明したこの発明によれば、円錐状
の傾斜面の周縁部にナットと同じ六面の側壁部を交叉し
て軸方向へ一体形成したから、ナットを回動させるスパ
ナ等の工具にて簡便迅速かつ容易、しかも締付力強くボ
ルトに螺合することができるため、円錐状の傾斜面がナ
ットの頭面と同一平面になるまで押し潰されると、円孔
の内径が谷部の直径に近づいてその全周でボルトに圧接
し、特に円孔の内周縁に粗面部を形成しておくと、粗面
部がその全周でボルトに圧接できて、緩み止め具は回転
することもなく、ナット緩み止めの確実性を達成するこ
とができる。かくして、ボルトがナットに対し、又は、
ナットがボルトに対して軸方向へ移動しようとすればす
るほど、ナット緩み止め具がボルトと楔合して一体化
し、緩み止めの度合が増大する等の効果を奏する。According to the present invention described above, a conical shape is provided.
Cross the same six side walls as the nut on the periphery of the slope
Is formed integrally in the axial direction.
Simple, quick and easy with tools such as
Can be screwed onto the
When crushed until it is flush with the head of the
The inner diameter of the bolt approaches the diameter of the valley and presses the bolt around the entire circumference
In particular, if a rough surface is formed on the inner peripheral edge of a circular hole,
The part can be pressed against the bolt all around its circumference, and the locking stopper rotates
Without losing the nuts.
Can be. Thus, the bolt is attached to the nut or
As the nut moves in the axial direction with respect to the bolt, the nut locking device is wedge-engaged with the bolt to be integrated, and the degree of locking is increased.
【図１】この発明の実施の形態を示す正面図FIG. 1 is a front view showing an embodiment of the present invention.
【図２】ナット緩み止め具の平面図FIG. 2 is a plan view of a nut loosening stopper.
【図３】図２のＡ−Ａ断面図FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図４】ナット緩み止め具の他の例を示す部分拡大断面
図FIG. 4 is a partially enlarged sectional view showing another example of the nut loosening stopper.
【図５】作用説明図FIG. 5 is an explanatory diagram of an operation.
４…ボルト ５…ナット ６…ナット緩み止め具 ７…側壁部 ８…板体 ９…螺部 １０…谷部 １１…円孔 １２…切欠部 １３…内周縁 １６…粗面部 １７…山部 １８…刃部 DESCRIPTION OF SYMBOLS 4 ... Bolt 5 ... Nut 6 ... Nut loosening stopper 7 ... Side wall part 8 ... Plate body 9 ... Screw part 10 ... Valley part 11 ... Circular hole 12 ... Notch part 13 ... Inner peripheral edge 16 ... Rough surface part 17 ... Mountain part 18 ... Blade
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B21K 1/70──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B21K 1/70
Claims (2)
谷部の直径よりも大きくて山部の直径よりも小さい直径
の円孔を中心部に穿設するとともに、該円孔の内周縁が
前記谷部の１ピッチに相当するように切欠部を介して螺
旋状に形成され、かつ、該円孔を穿設した部位が円錐状
の傾斜面である板体からなり、該円錐状の傾斜面の周縁
部に前記ナットと同じ六面の側壁部が交叉して軸方向へ
一体形成されていることを特徴とするナット緩み止め
具。1. A circular hole having a diameter larger than a diameter of a valley portion and smaller than a diameter of a crest portion in a thread portion of a bolt for screwing a nut is formed at a center portion, and an inner peripheral edge of the circular hole is formed. the formed into valleys helically through the notch portion so as to correspond to one pitch of, and sites bored a circular hole Ri Do from the plate body is a conical inclined surface, the conical Perimeter of slope
The same six side walls as the nut intersect with the nut
Nut loose fasteners, characterized that you have been integrally formed.
いることを特徴とする請求項１記載のナット緩み止め
具。2. A nut loosening stopper according to claim 1, wherein a rough surface is formed on an inner peripheral edge of said circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8116860A JP2776792B2 (en) | 1996-05-13 | 1996-05-13 | Nut loosening stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8116860A JP2776792B2 (en) | 1996-05-13 | 1996-05-13 | Nut loosening stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09300042A JPH09300042A (en) | 1997-11-25 |
| JP2776792B2 true JP2776792B2 (en) | 1998-07-16 |
Family
ID=14697427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8116860A Expired - Lifetime JP2776792B2 (en) | 1996-05-13 | 1996-05-13 | Nut loosening stopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2776792B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01242810A (en) * | 1988-03-24 | 1989-09-27 | Oyo Kikaku:Kk | Locking mechanism for nut |
| JPH06129416A (en) * | 1992-10-19 | 1994-05-10 | Koichi Yoshikawa | Stopper for screw loosening |
-
1996
- 1996-05-13 JP JP8116860A patent/JP2776792B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09300042A (en) | 1997-11-25 |
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