JPH0220493Y2 - - Google Patents
Info
- Publication number
- JPH0220493Y2 JPH0220493Y2 JP1984154699U JP15469984U JPH0220493Y2 JP H0220493 Y2 JPH0220493 Y2 JP H0220493Y2 JP 1984154699 U JP1984154699 U JP 1984154699U JP 15469984 U JP15469984 U JP 15469984U JP H0220493 Y2 JPH0220493 Y2 JP H0220493Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- groove
- bolt
- helical groove
- handed
- 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
- 238000009763 wire-cut EDM Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000007514 turning Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Dowels (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Forging (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はねじの軸方向にねじれ溝を設け、その
溝に沿つてねじれ方向に弾性変形をさせてねじの
緩みを防止又はバツクラツシユを除去するように
したねじに関する。[Detailed description of the invention] [Industrial application field] This invention provides a twisting groove in the axial direction of the screw, and elastically deforms the screw in the twisting direction along the groove to prevent the screw from loosening or eliminate backlash. Concerning screws.
第３図ａ，ｂ，に示すようにねじのおねじ部に
底面から中心軸方向に沿つて直線状の切溝を設け
た緩み止めねじが実開昭55−12105号公報に開示
されている。
As shown in Figures 3a and 3b, a locking screw is disclosed in Japanese Utility Model Application Publication No. 12105/1983, in which a linear cut groove is provided in the male threaded portion of the screw from the bottom surface along the central axis direction. .
この従来のおねじ１の中心軸方向に沿つて直線
状に設けた溝２に対し、力ｆが作用した場合は、
第３図ｂに示すように溝２の端の寸ｄはおねじ１
の径Ｄより小さいから軸の中心方向に向つて弾性
変形することによつて、ねじ径が縮少するように
なりねじは緩むような欠点があつた。
When a force f is applied to the groove 2 that is linearly provided along the central axis direction of the conventional male screw 1,
As shown in Figure 3b, the dimension d of the end of the groove 2 is the male thread 1.
Since the screw diameter is smaller than the diameter D of the screw, the screw diameter is reduced due to elastic deformation toward the center of the shaft, resulting in the screw loosening.
本願考案はこのような欠点を除いたねじれ溝を
有するねじを提供することを目的とする。 The object of the present invention is to provide a screw having a helical groove that eliminates such drawbacks.
しかして、本考案のねじは、ねじの軸方向にね
じが右ねじの場合は左ねじのねじれ溝、ねじが左
ねじの場合は右ねじれ溝等のねじれ溝をワイヤカ
ツト放電加工によつてねじれ溝を設けたものであ
り、特にそのねじれ角度の多くは180゜以下にした
ものである。
Therefore, in the screw of the present invention, a helical groove is formed in the axial direction of the screw by wire cutting and electric discharge machining, such as a left-handed helical groove when the screw is a right-handed screw, and a right-handed helical groove when the screw is a left-handed screw. In particular, most of the torsion angles are set to less than 180°.
本考案のねじの溝はねじれ溝であるから、ねじ
の中心に向つて力が作用した場合は、ねじれなが
ら弾性変形をし、且つねじの外形より拡大する部
分ができる。従つて、ねじれながら弾性変形をす
ることは、ねじを回すことと同じ作用をするもの
であるから、ねじを回してねじ面で締着するよう
に作用し、且つ、ねじ径が拡大する作用との両者
でバツクラツシユをとつたり、緩みの防止をす
る。
Since the groove of the screw of the present invention is a helical groove, when a force is applied toward the center of the screw, it undergoes elastic deformation while twisting, and a portion is formed that is larger than the outer shape of the screw. Therefore, elastic deformation while twisting has the same effect as turning a screw, so it acts like turning a screw and tightening it on the threaded surface, and also expands the thread diameter. Both of these are used to prevent breakage and loosening.
特にねじれ溝が螺旋溝であつて、その螺旋溝が
少なくとも約90゜前後程度、又はそれ以上で、好
ましくは約120゜以上、更に好ましくは約180゜程度
に設けた場合は、その終点の溝を中心にねじれな
がら拡開する部分があつて、ねじ面やねじの頂又
は谷とで圧着して、緩みを防止するものである。 In particular, when the helical groove is a helical groove and the helical groove is provided at least about 90 degrees or more, preferably about 120 degrees or more, and more preferably about 180 degrees, the groove at the end point There is a part that expands while twisting around the center, and is crimped against the threaded surface or the top or valley of the thread to prevent loosening.
第１図ａは本考案の実施例の側面図であり、第
１図ｂは第１図ａのＡ矢視図である。３はボル
ト、４はボルト３に螺合するナツト、５，６はボ
ルト３とナツト４とによつて締付けられたり、或
いはハサミのように摺動可能に取付けられる部材
である。７はボルト３に設けた溝であつて、鎖線
で示したワイヤ電極８で、第１図ｂにも示したよ
うにねじの軸方向に、90゜ねじりながらワイヤカ
ツト放電加工しながら設けた溝である。この溝７
はボルト３のねじが右ねじの場合は左ねじれのね
じれ溝７とし、ボルト３のねじが左ねじの場合は
右ねじれのねじれ溝７とする。
FIG. 1a is a side view of an embodiment of the present invention, and FIG. 1b is a view taken along arrow A in FIG. 1a. 3 is a bolt, 4 is a nut screwed onto the bolt 3, and 5 and 6 are members that are tightened by the bolt 3 and the nut 4 or are slidably attached like scissors. 7 is a groove formed in the bolt 3, and the wire electrode 8 shown by the chain line is a groove formed by wire cutting electric discharge machining while twisting 90 degrees in the axial direction of the screw, as shown in Fig. 1b. be. This groove 7
If the thread of the bolt 3 is a right-handed thread, it is a left-handed helical groove 7, and if the bolt 3 is a left-handed thread, it is a right-handed helical groove 7.
第１図ｂに示すように、溝７の切り口に直角な
力ｆを作用すると、溝７の切り終りはワイヤ電極
８′に示した方向にあるから、ボルト３は溝７に
沿つてねじれながら互いに反対方向に弾性変形を
する。 As shown in FIG. 1b, when a force f perpendicular to the cut end of the groove 7 is applied, the bolt 3 twists along the groove 7 because the end of the cut of the groove 7 is in the direction indicated by the wire electrode 8'. They undergo elastic deformation in opposite directions.
従つて、ボルト３のねじれは第４図に示すボル
ト３のねじ山のねじ面９はねじ３を回したよう
に、且つ、径が拡大したようにしてナツト４に圧
着し、緩みを防止する。 Therefore, when the bolt 3 is twisted, the thread surface 9 of the thread of the bolt 3 shown in FIG. 4 presses against the nut 4 as if the screw 3 had been turned and the diameter had expanded, thereby preventing loosening. .
第２図ａに示すのは、ワイヤカツト放電加工機
を用いて、ワイヤ電極８をボルト３の軸心に対し
て直角方向になるように設置しておいて、ボルト
３を180゜回転させながら軸心方向に送ることによ
り、螺旋状の溝７を設けたりする。 What is shown in Fig. 2a is a wire-cut electrical discharge machine, with the wire electrode 8 installed perpendicular to the axis of the bolt 3, and the bolt 3 being rotated 180 degrees A spiral groove 7 can be provided by feeding the fiber in the central direction.
第２図ａをＢ矢視した第２図ｂに示すように矢
印ａの力が加わると鎖線Ｃに示す方向にねじれな
がら矢印ｂの力はねじ面９に加わることによつ
て、ボルト３とナツト４とのねじ面９とが締着す
る。 As shown in FIG. 2b, which is taken from FIG. The nut 4 and the threaded surface 9 are tightened.
前記溝７の旋回角度としては、通常少なくとも
約90゜程度以上、約120゜程度、又は、それ以上特
に第２図ａ，ｂの如く約180゜程度とするのが好ま
しいが、使用目的等によつてはより小さい角度の
ものも使用し得る。 The turning angle of the groove 7 is usually at least about 90 degrees or more, about 120 degrees, or more, preferably about 180 degrees as shown in Figure 2 a and b, but depending on the purpose of use etc. In some cases, smaller angles may also be used.
このような溝７を設けたボルト３を作製するに
当つては、先ずボルト３に溝７を予め設け、その
溝７を押し狭めるようにしておいてねじ部を作製
し、その後解放して弾性的に拡開させるか、ねじ
部を先に作製しておいて、その後に溝７を作製
し、次に溝７を拡開して熱処理を施すことにより
バネような弾力を持たせるようにしてもよい。 To manufacture a bolt 3 with such a groove 7, first, the groove 7 is provided in the bolt 3 in advance, the groove 7 is compressed and narrowed to create a threaded portion, and then released to provide elasticity. Alternatively, the threaded portion may be made first, then the groove 7 may be made, and then the groove 7 may be enlarged and heat treated to give it spring-like elasticity. Good too.
本考案によれば、ボルトにねじれた溝を設けた
ことによつて、ボルトに外力が作用するか、ボル
ト自体の弾力で、ねじれながら変位し、その変位
部分には拡開するところがあることによつて、あ
たかも、ねじを回したようにねじり、且つ、ねじ
の径が拡大したようになつて締着し、緩みを防止
する効果を有する。又、ねじとナツトとが螺合し
て相対的に移動するようにして用いた場合には、
ねじ部のバツクラツシユが、ねじれながら拡開す
るねじによつて完全に取り除かれる効果をも有す
るものである。
According to the present invention, by providing the bolt with a twisted groove, the bolt is twisted and displaced due to an external force acting on the bolt or due to the bolt's own elasticity, and the displaced portion has a part that expands. Therefore, it twists as if turning a screw, and tightens as if the diameter of the screw had expanded, thereby having the effect of preventing loosening. In addition, when the screw and nut are screwed together and used so that they move relative to each other,
It also has the effect of completely removing the crushing of the threaded portion by the screw expanding while twisting.
第１図ａは本考案の実施例の断面図、第１図ｂ
は第１図ａのＡ矢視図、第２図ａは他の実施例の
断面図、第２図ｂは第２図ａのＢ矢視図、第３図
ａは従来技術を例示した図、第３図ｂは第３図ａ
のＣ矢視図、第４図はねじ山の拡大図である。
３……ボルト、４……ナツト、７……溝、９…
…ねじ面。
Figure 1a is a sectional view of an embodiment of the present invention, Figure 1b
is a view in the direction of arrow A in FIG. 1a, FIG. 2a is a sectional view of another embodiment, FIG. 2b is a view in direction of arrow B in FIG. 2a, and FIG. 3a is a diagram illustrating the prior art. , Figure 3b is Figure 3a
4 is an enlarged view of the screw thread. 3... Bolt, 4... Nut, 7... Groove, 9...
...Screw surface.
Claims (1)
じれのねじれ溝、ねじが左ねじの場合は右ねじ
れのねじれ溝等のねじれ溝を有することを特徴
とするねじ。 (2) ねじれ溝がワイヤカツト放電加工によるスリ
割り状のねじれ溝である実用新案登録請求の範
囲第１項記載のねじ。 (3) ねじれ溝が180゜ねじれる実用新案登録請求の
範囲第１項記載のねじ。[Scope of Claim for Utility Model Registration] (1) The screw has a helical groove in the axial direction, such as a left-handed helical groove if the screw is a right-handed screw, or a right-handed helical groove if the screw is a left-handed screw. Characteristic screws. (2) The screw according to claim 1, wherein the helical groove is a slit-shaped helical groove formed by wire cut electrical discharge machining. (3) The screw according to claim 1 of the utility model registration claim in which the helical groove is twisted by 180°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984154699U JPH0220493Y2 (en) | 1984-10-12 | 1984-10-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984154699U JPH0220493Y2 (en) | 1984-10-12 | 1984-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6169517U JPS6169517U (en) | 1986-05-13 |
| JPH0220493Y2 true JPH0220493Y2 (en) | 1990-06-05 |
Family
ID=30712691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984154699U Expired JPH0220493Y2 (en) | 1984-10-12 | 1984-10-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0220493Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512105B2 (en) * | 1974-01-31 | 1980-03-29 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512105U (en) * | 1978-07-10 | 1980-01-25 |
-
1984
- 1984-10-12 JP JP1984154699U patent/JPH0220493Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5512105B2 (en) * | 1974-01-31 | 1980-03-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6169517U (en) | 1986-05-13 |
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