JPH02271103A - Self-locking screw member - Google Patents
Self-locking screw memberInfo
- Publication number
- JPH02271103A JPH02271103A JP9176889A JP9176889A JPH02271103A JP H02271103 A JPH02271103 A JP H02271103A JP 9176889 A JP9176889 A JP 9176889A JP 9176889 A JP9176889 A JP 9176889A JP H02271103 A JPH02271103 A JP H02271103A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- screw
- flank angle
- locking
- tip
- 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.)
- Pending
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- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003394 haemopoietic effect Effects 0.000 description 1
- 230000011132 hemopoiesis Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、セルフロックねじ部材、殊に、食い付きが
良好で、しかも、締付は終了とと同時にセルフロックさ
れるセルフロックねじ部材に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a self-locking screw member, particularly a self-locking screw member that has good bite and is self-locking as soon as tightening is completed. It is something.
（従来の技術）
従来のセルフロックねじ部材としては、第６図に示すよ
うなものがある（例えば、特公昭５６−１９４９２号公
報参照）。(Prior Art) As a conventional self-locking screw member, there is one shown in FIG. 6 (see, for example, Japanese Patent Publication No. 19492/1983).
このものは、螺旋状に形成された第１ねじ山２を有する
第１ねじ部材としてのボルト１と、このボルト１の第１
ねじ山２と係合する第２ねじ山１２を有する第２ねじ部
材としてのナツト１１とからなり、前記ボルト１の第１
ねじ山２が、その根元部４と先端部４、及び前記根元部
４から先端部５に向って所定のフランク角（例えば６０
′）で収束する二つの側面６．６を備えると共に、前記
第１ねじ山２に、その先端部５から半径方向に向うスリ
ット７を、当該第１ねじ山２と同一ピッチの螺旋状に形
成する一方、前記ナツト１１は、前記第１ねじ山２に係
合する螺旋状の第２ねじ山１２を有し、かつ、該第２ね
じ山１２を、その根元部１３から先端部１４に向って所
定のフランク角で収束する二つの側面１５．１５により
構成したものである。This thing includes a bolt 1 as a first screw member having a first thread 2 formed in a spiral shape, and a first screw thread 2 of this bolt 1.
a nut 11 as a second screw member having a second screw thread 12 that engages with the screw thread 2;
The thread 2 has a root portion 4, a tip portion 4, and a predetermined flank angle (for example, 60 mm) from the root portion 4 to the tip portion 5.
'), and a slit 7 extending in the radial direction from the tip 5 of the first thread 2 is formed in a helical shape with the same pitch as that of the first thread 2. On the other hand, the nut 11 has a spiral second thread 12 that engages with the first thread 2, and the second thread 12 extends from the root 13 toward the tip 14. It is constructed by two side surfaces 15.15 that converge at a predetermined flank angle.
そして、このセルフロックねじ部材のボルト１の第１ね
じ山２の、スリット７を設けた部分の側面フランク角（
第６図において、第１ねじ山２の面傾斜側面６．６の延
長部である破線部６Ｂ、６Ｂの交差角）は、前記ナツト
１１の第２ねじ山側面１６．１６のフランク角より小さ
く構成され、かつ、前記ボルト１とナツト１１とが係合
した際。Then, the side flank angle (
In FIG. 6, the intersection angle of dashed line portions 6B, 6B, which are extensions of the sloped side surfaces 6.6 of the first thread 2, is smaller than the flank angle of the second thread side 16.16 of the nut 11. and when the bolt 1 and nut 11 are engaged.
ボルト１のスリット７を有する第１ねじ山２部分が、そ
のスリット７を狭める方向に弾性変形するようにしたも
のである。The first screw thread 2 portion of the bolt 1 having the slit 7 is elastically deformed in the direction of narrowing the slit 7.
なお、第６図中、３はボルト１の第１ねじ山２．２間の
谷部、１３はナツト１１の第２ねじ山１２．１２間の打
部である。In addition, in FIG. 6, 3 is a valley between the first threads 2.2 of the bolt 1, and 13 is a striking part between the second threads 12, 12 of the nut 11.
（発明が解決しようとする課題）
しかしながら、このセルフロックねじ部材は、前記ボル
ト１の第１ねじ山２が、その先端部５から根元部４に向
う半径方向のスリット７により分割されると共に、その
二つの側面６Ｂ、６Ｂにより構成されるフランク角が、
前記ナツト１１の第２ねじ山１２のフランク角より小さ
く構成され、前記ボルト１とナツト１１との係合により
、前記ボルト１の第１ねじ山２のフランク角が狭められ
ることに基づく、分割されたねじ山２部分の弾性変形の
復元力を、前記ボルト１及びナツト１１の係合時におけ
る緩み止め力として利用するものであるから、相応の緩
み止効果を期待できるものの、このものにあっては、そ
の製造に当り、ボルト１の第１ねじ山２の頂部５からそ
の根元部４に向ってスリット７を設けて二つに分割する
必要があり、しかも、この２分割された第１ねじ山２の
両側面６．６、殊にその先端部６Ｂ、６Ｂによるフラン
ク角が、前記ナツト１１のねじ山１２の両側面１６．１
６のフランク角より小さ゛くなるように外側へ湾曲させ
るという面倒な加工を必要とし、また、１つのねじ山２
が２つに分割されることに基づき、その強度が相応に低
下するという課題があった。(Problems to be Solved by the Invention) However, in this self-locking screw member, the first thread 2 of the bolt 1 is divided by a radial slit 7 extending from the tip 5 to the root 4, and The flank angle formed by the two side surfaces 6B and 6B is
It is configured to be smaller than the flank angle of the second thread 12 of the nut 11, and is split based on the fact that the engagement between the bolt 1 and the nut 11 narrows the flank angle of the first thread 2 of the bolt 1. Since the restoring force of the elastic deformation of the two threaded portions is used as a locking force when the bolt 1 and nut 11 are engaged, a corresponding locking effect can be expected; In manufacturing, it is necessary to divide the first thread 2 of the bolt 1 into two parts by providing a slit 7 from the top 5 to the base 4, and furthermore, the first thread 2 divided into two parts must be divided into two parts. Both sides 6.6 of the thread 2, especially the flank angle formed by the tips 6B, 6B, are the same as the sides 16.1 of the thread 12 of the nut 11.
It requires a troublesome process of curving outward so that the flank angle is smaller than the flank angle of 2.
There was a problem in that the strength was correspondingly reduced due to the fact that it was divided into two parts.
また１図示しないが、互いに係合する通常のボルト又は
ナツトの何れか一方のねじ山を、その全長に且つてその
先端部から根元部まで半径方向に分割して、その外側（
谷部側）へ湾曲させることにより、その両側面によるフ
ランク角を小さくし、前記ボルト、ナツトの締付けによ
り、前記分割したねじ山を元のねじ山と同一フランク角
になるよう弾性変形させ、その復元力により当該ボルト
、ナツトの締付時における緩止めをするようにしたセル
フロックねじ部材も、既に提案されている（例えば、米
国特許７９３８２４号明細書参照）が、このものにも前
記と略々同様な課題があった。In addition, although not shown, the threads of either ordinary bolts or nuts that engage with each other are divided in the radial direction along the entire length from the tip to the root, and the outside (
By curving it toward the trough side), the flank angle of both sides is reduced, and by tightening the bolt or nut, the divided thread is elastically deformed to have the same flank angle as the original thread. A self-locking screw member that uses restoring force to prevent the bolt or nut from loosening when tightened has already been proposed (for example, see US Pat. No. 793,824), but this also has the above-mentioned and abbreviated features. There were many similar issues.
この発明は、このような従来のセルフロックねじ部材に
おける課題に着目してなされたもので。This invention was made by focusing on the problems with such conventional self-locking screw members.
螺旋状に形成された第１及び第２のねじ山を有する第１
及び第２ねじ部材からなり、前記第１ねじ部材の第１ね
じ山側面により構成されるフランク角を、その根元部か
ら中央部までのフランク角より、その中央部から先端部
までのフランク角を小さくして、外側（ねじ山間の谷部
側）へわ僅かに張出させることにより、前記第１及び第
２ねじ部材の係合時に、前記外側へ張出する第１ねじ部
材の第１ねじ山の先端部側面を、第２ねじ部材の第２ね
じ山の根元部（谷部）側面に強圧させ、第１及び第２ね
じ部材による締付終了と同時にセルフロックする、セル
フロックねじ部材を提供しようとするものである。a first having first and second threads helically formed;
and a second threaded member, and the flank angle formed by the first threaded side surface of the first threaded member is the flank angle from the center to the tip than the flank angle from the root to the center. The first screw of the first screw member is made smaller and slightly protrudes outward (on the side of the valley between the threads), so that the first screw of the first screw member protrudes outward when the first and second screw members are engaged. Provided is a self-locking screw member in which the side surface of the tip of the ridge is strongly pressed against the side surface of the root (trough) of the second thread of the second screw member, and self-locks at the same time as the tightening by the first and second screw members is completed. This is what I am trying to do.
（課題を解決するための手段）
この発明は、前記のような課題を解決するため、根元部
と先端部と、前記根元部から先端部に向って所定のフラ
ンク角で収束する二つの側面とからなる螺旋状の第１ね
じ山を有する第１ねじ部材と、該第１ねじ部材の第１ね
じ山に係合する第２ねじ山を有し、該第２ねじ山がその
根元部及び先端部と、前記根元部から先端部に向って所
定のフランク角で収束する二つの側面からなる第２ねじ
部材との組合せからなり、前記第１ねじ部材の第１ねじ
山が、その端部に１ないし３の螺合誘導部ねじ山と、該
螺合誘導部ねじ山に続く緩止め部ねじ山とにより構成さ
れ、かつ、前記緩止め部ねじ山の側面フランク角を、そ
の根元部から側面中央部までの根元部フランク角が、前
記第１ねじ部材端部の誘導部ねじ山側面のフランク角と
等しく。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a base portion, a tip portion, and two side surfaces that converge at a predetermined flank angle from the root portion toward the tip portion. a first threaded member having a first spiral thread, and a second threaded member that engages with the first threaded thread of the first threaded member, the second threaded member having a base portion and a tip portion thereof. and a second threaded member consisting of two side surfaces that converge at a predetermined flank angle from the root to the tip, and the first thread of the first threaded member is attached to the end thereof. It is composed of 1 to 3 threads of the threading guide part and a thread of the locking part following the threads of the threading guide part, and the side flank angle of the thread of the locking part is set from the root to the side surface. A root flank angle up to the center portion is equal to a flank angle of a side surface of the guide thread at the end of the first screw member.
その側面中央部から先端部までの先端部ねじ山側面のフ
ランク角が、前記根元部フランク角より小さく構成され
ているものである。The flank angle of the side surface of the tip thread from the center of the side surface to the tip is configured to be smaller than the root flank angle.
（作用）
この発明は、前記のような構成を有するから、第１ねじ
部材端部の誘導部ねじ山を第２ねじ部材のねじ山へ螺合
させる、該両ねじ部材の正常でスムーズな螺合に続き、
第１ねじ部材を第２ねじ部材に対してさらに強力に回動
させることにより、前記第１ねじ部材の緩止め部ねじ山
の、フランク角の小さい先端部側面を、第２ねじ部材の
ねじ山の根元部側面に強圧させ、前記両ねじ部材による
締付は終了と同時にセルフロックする。(Function) Since the present invention has the above-mentioned configuration, the guiding portion thread at the end of the first threaded member is screwed into the thread of the second threaded member, and the normal and smooth threading of both threaded members is achieved. Following the
By rotating the first screw member more strongly with respect to the second screw member, the side surface of the distal end portion of the locking portion screw thread of the first screw member, which has a small flank angle, is rotated against the root of the thread of the second screw member. A strong pressure is applied to the side surface of the base part, and the tightening by both screw members is self-locked at the same time as the tightening is completed.
（実施例）
以下、この発明に係るセルフロックねじ部材の実施例を
、第１図ないし第４図を参照して説明する。なお、第６
図に示した従来例と共通する部分には、同−名称及び同
一符号を用いる。(Embodiments) Hereinafter, embodiments of the self-locking screw member according to the present invention will be described with reference to FIGS. 1 to 4. In addition, the 6th
The same names and symbols are used for parts common to the conventional example shown in the figures.
第１図ないし第４図において、１１は第２ねじ部材とし
てのナツト、１２はナツト１１の螺旋状の第２ねじ山、
１３は第２ねじ山１２．１２間の谷部、１４及び１５は
第２ねじ山１２の底部及び先端部、１６．１６は第２ね
じ山１２の両側面で、これらは前記第６図に示した従来
例におけるナツト１１と変らない。In FIGS. 1 to 4, 11 is a nut as a second screw member, 12 is a spiral second thread of the nut 11,
13 is the valley between the second threads 12 and 12, 14 and 15 are the bottom and tip of the second thread 12, and 16 and 16 are both sides of the second thread 12, which are shown in FIG. This is the same as the nut 11 in the conventional example shown.
２１は第１ねじ部材としてのボルト、２１Ａはボルト２
１の頭部、２２はボルト２１の螺旋状の第１ねじ出で、
この第１ねじ山２１は、誘導部ねじ山２２Ａ及び緩止め
部ねじ山２２Ｂにより構成される。２３はねじ山２２の
谷部、２４及び２５はねじ山２２の根元部及び先端部、
２６は誘導部ねじ山２２Ａの側面で、このフランク角α
□は例えば、６０’に構成される。２６Ａ及び２６Ｂは
緩止め部ねじ山２２Ｂの根元部側面及び先端部側面、２
７は根元部側面２６Ａと先端部側面２６Ｂとの境界域を
なす、緩止め部ねじ山２２Ａの側面中央部（ボルト２１
の中心線０からの高さＨ）である。21 is a bolt as a first screw member, 21A is a bolt 2
1 is the head, 22 is the spiral first thread of the bolt 21,
The first screw thread 21 is composed of a guiding portion screw thread 22A and a locking portion screw thread 22B. 23 is the valley of the thread 22, 24 and 25 are the root and tip of the thread 22,
26 is the side surface of the guide thread 22A, and this flank angle α
For example, □ is configured to be 60'. 26A and 26B are the root side and tip side of the locking part screw thread 22B;
7 is the center part of the side surface of the locking part screw thread 22A (the bolt 21
is the height H) from the center line 0 of .
α２は緩止め部ねじ山２２Ｂの根元部側面２６Ａのフラ
ンク角で、このフランク角α２は前記フランク角α、と
同じ６０’に構成される。α３は緩止め部ねじ山２２Ｂ
の先端部側面２６Ｂのフランク角で１例えば、５０″に
設定される。α４はねじ山２２Ｂの根元部フランクα２
と先端部フランク角α□とのフランク差角で、この例で
は１０’である。α2 is the flank angle of the root side surface 26A of the locking portion screw thread 22B, and this flank angle α2 is configured to be 60', which is the same as the aforementioned flank angle α. α3 is the locking part screw thread 22B
The flank angle of the tip side surface 26B is set to 1, for example, 50''. α4 is the root flank α2 of the thread 22B.
and the tip flank angle α□, which is 10′ in this example.
次に、この実施例の作用を説明する。Next, the operation of this embodiment will be explained.
まず、ボルト２１の端部（第１図では右側）の誘導部Ｌ
□の誘導部ねじ山２２Ａを、ナツト１１の第２ねじ山１
２の谷部１３に螺合させ、ボルト２１をナツト１１に対
して旋回すると、ボルト２１の誘導部Ｌ０の１ないし３
つ（第１図では２つ）の誘導部ねじ山２２Ａが、ナツト
１１のねじ山１２に通常のボルト、ナツトと同様にねじ
込まれる。First, the guide portion L at the end of the bolt 21 (on the right side in Figure 1)
□ guide part screw thread 22A, nut 11 second thread 1
When the bolt 21 is screwed into the trough 13 of No. 2 and rotated relative to the nut 11, the guide portion L0 of the bolt 21 from 1 to 3
The two (two in FIG. 1) guide threads 22A are screwed into the threads 12 of the nut 11 in the same way as a normal bolt or nut.
この１ないし３のねじ山のねじ込みの後、ボルト２１を
更らに回動させると、前記誘導部ねじ山２２Ａに続く緩
止め部ねじ山２２Ｂ、殊に、その先端部側面２６Ｂが、
ナツト１１の谷部１３（したがって、第２ねじ山１２）
の側面１６、殊に、その根元部側面内に、第４図の破線
２６Ｂに示すように食込み（強圧され）なから強個に締
付けられ、その締付完了と同時にセルフロックされる。After screwing in one to three threads, when the bolt 21 is further rotated, the locking part thread 22B following the guide part thread 22A, especially its tip side surface 26B,
Valley portion 13 of nut 11 (therefore, second thread 12)
The side surface 16, particularly the root side surface thereof, is bitten (forced) and firmly tightened as shown by the broken line 26B in FIG. 4, and is self-locked at the same time as the tightening is completed.
そして、このボルト２１は、第５図に転進面を平面図で
示すような転造ダイス３０を一対、対向させ、その間に
図示しないねじブランクを配し、転進により成形される
。このダイス３０は、ボルト２１の誘導部ねじ山２２Ａ
の転造面３１（第５図の破線部）と、緩止め部ねじ山２
２Ｂの転造面３２（同図の実線部）とが同一平面上に、
隣接して形成される。また、これらの両転造血３１及び
３２は、前記誘導部ねじ山２２Ａ及び緩止め部ねじ山２
２Ｂに対応する形状の転造面を持つ。ボルト２１の誘導
部ねじ山２２Ａの長さＬ２と、緩止め部ねじ山２２Ｂの
長さＬ２とは、ダイス３０の両転造血３１及び３２の巾
り工及びＤ２により決定される。This bolt 21 is formed by rolling a pair of rolling dies 30 whose rolling surfaces are shown in plan view in FIG. This die 30 is a guide part thread 22A of the bolt 21.
The rolled surface 31 (dashed line in Fig. 5) and the thread 2 of the locking part
The rolled surface 32 of 2B (solid line part in the same figure) is on the same plane,
formed adjacent to each other. Further, these double hematopoiesis 31 and 32 are connected to the guide portion screw thread 22A and the locking portion screw thread 2.
It has a rolled surface with a shape corresponding to 2B. The length L2 of the guiding part thread 22A of the bolt 21 and the length L2 of the loosening part thread 22B are determined by the width and D2 of the double blood rolling 31 and 32 of the die 30.
なお、第５図ではボルト２１の誘導部ねじ山２２Ａと緩
止め部ねじ山２２Ｂとを転造する転造面３１と３２にお
ける冬山が、その境界域において変る構造のものを示し
たが、このダイス３０は、図示しないが５その両転造血
３］、と３２の境界域においけるダイス３０の全長に旦
って、誘導部ねじ山２２Ａ又は緩止め部ねじ山２２Ｂの
何れか一方のみの成形用の山（第５図の破線と実線）と
が、途中で接続されることなく、その全長に旦って隣接
するような構造のものとして構成することもできる。Note that FIG. 5 shows a structure in which the ridges on the rolling surfaces 31 and 32 that roll the guiding part thread 22A and the locking part thread 22B of the bolt 21 change in the boundary area. Although not shown, the die 30 has only one of the guiding part screw thread 22A or the locking part thread 22B over the entire length of the die 30 in the boundary area between the two rolling hematopoietic parts 5 and 32 (not shown). It is also possible to construct a structure in which the forming peaks (broken lines and solid lines in FIG. 5) are not connected in the middle but are adjacent to each other along their entire length.
また、以上の説明では、ボルト２１及びナツト１１を第
１及び第２ねじ部材として述べたが１図示しないが、こ
れらとは逆に、ナツト１１及びボルト２１を第１及び第
２ねじ部材とし、ナツト１１の一側の１ないし３つのね
じ山を誘導部ねじ山とし、ナツト１１のその他のねじ山
を、その側面中央部から先端部側（内径側）のフランク
角が、その根元部のフランク角β□より小さくなるよう
に構成し、このようなナツトに通常構造のボルトを螺合
させる構造の、セルフロックねじ部材とし構成すること
もできる。Further, in the above explanation, the bolt 21 and the nut 11 were described as the first and second screw members, but although not shown in the drawings, conversely, the nut 11 and the bolt 21 are used as the first and second screw members, One to three threads on one side of the nut 11 are used as guide threads, and the flank angle from the center of the side surface to the tip (inner diameter side) is the same as the flank at the root. It is also possible to construct a self-locking screw member so that the angle β□ is smaller than that, and a bolt of a normal structure is screwed into such a nut.
なお、前記ボルト２１及びナツト１１の第１及び第２ね
じ山２２及び１２を、その先端部のフランク角が６０°
をなす標準ねじとした場合には。Note that the first and second threads 22 and 12 of the bolt 21 and nut 11 have a flank angle of 60° at their tips.
When using a standard screw that forms .
そのボルト２１又はナツト１１の第１又は第２ねじ山２
２．１２の緩止め部Ｌ２のねじ山２２Ｂの先端部側面の
フランク角α、を、例えば、５５゜ないし２０°程度に
することができる。The first or second thread 2 of the bolt 21 or nut 11
The flank angle α of the side surface of the tip end of the thread 22B of the locking portion L2 of 2.12 can be set to, for example, about 55° to 20°.
また、この先端部フランク角α、を小さくする程、ボル
ト２１とナツト１１との螺合抵抗が大きくなる。それ故
、このボルト１の緩止め部Ｌ２ねじ山２２Ｂの先端部側
面２６Ｂのフランク角α。Furthermore, the smaller the tip flank angle α is, the greater the screwing resistance between the bolt 21 and the nut 11 becomes. Therefore, the flank angle α of the tip side surface 26B of the locking portion L2 thread 22B of this bolt 1 is.
を小さくする程、同ねじ山２２Ｂの先端部の高さ（ボル
ト２１の中心線Ｏからの高さＨを低くするのがよい。The smaller the height of the tip of the thread 22B (the height H from the center line O of the bolt 21), the better.
なお、緩止め部ねじ山２２Ｂの根元部側面のフランク角
（α□＝α、）と、その先端部側面フランク角α、との
差角α、を小さくする程、このセルフロックねじ部材に
よる緩止め作用が低下する。Note that the smaller the difference α between the flank angle (α□=α) of the side surface of the root portion of the locking portion screw thread 22B and the flank angle α of the side surface of the tip portion, the more the self-locking screw member loosens. The stopping action is reduced.
（発明の効果）
この発明は、前記のような構成を有し作用をするから、
次のような効果が得られる。(Effects of the Invention) Since the present invention has the structure and functions as described above,
The following effects can be obtained.
（１） 第１ねじ部材の誘導部ねじ山のフランク角を一
定にすると共に、その締付部ねじ山の先端部側面のフラ
ンク角を、同締付部ねじ山の根元部側面のフランク角よ
り小さく構成したから、第２ねじ部材とのスムーズな係
合開始に引続いて強力な締付けを、通常の締付より僅か
に大きなトルクによりスムーズに行える。(1) Keep the flank angle of the guide thread of the first screw member constant, and make the flank angle of the tip side of the tightening thread smaller than the flank angle of the root side of the tightening thread. Because of this structure, following the smooth start of engagement with the second screw member, strong tightening can be smoothly performed with a torque slightly larger than normal tightening.
（２） 第１及び第２ねじ部材の締付は時に、第１ねじ
部材の緩止め部ねじ山の先端部の小フランク角の側面が
、第２ねじ部材のねじ山の根元部に食込む構造であるか
ら、第１ねじ部材を第２ねじ部材へ締付けることにより
、直ちに、いわゆるセルフロック効果を期待できる。(2) When tightening the first and second screw members, the side surface of the small flank angle at the tip of the locking thread of the first screw member bites into the root of the thread of the second screw member. Therefore, by tightening the first screw member to the second screw member, a so-called self-locking effect can be immediately expected.
（３） 第１ねじ部材の緩止め部のねじ出先端部側面の
フランク角を、その根元部側面のフランク角より対さく
するだけで、その余の構成を従来例と同様に構成できる
から、従来の同種セルフロックキングねじ部材と比らべ
て容易に製作できる。(3) By simply making the flank angle of the side surface of the screwed-out tip of the locking portion of the first screw member more opposite to the flank angle of the side surface of its root portion, the rest of the structure can be constructed in the same manner as the conventional example. It is easier to manufacture than conventional self-locking screw members of the same type.
（４） 第１ねじ部材のねじ山を割溝により分割する必
要ながないので、第１ねじ部材の緩止め部ねじ山部の強
度低下を招く恐れなく、緩止め効果が大きく、また締付
力の大きなセルフロッキングねじ部材を提供できる。(4) Since there is no need to divide the thread of the first threaded member with a split groove, there is no risk of reducing the strength of the threaded part of the first threaded member, and the loosening effect is large, and the tightening A self-locking screw member with large force can be provided.
（５） 第１ねじ部材の緩止め部ねじ山にスリットを設
けることなく、その先端部側面のフランク角を小さくし
たから、回部のねじ山の強度低下がないばかりでなく、
先端部フランク角を小さくすることにより、返って、同
ねじ出先端部の肉厚が増加してその強度が増加するから
、同ねじ出先端部のフランクの僅かな減小により、充分
な緩止め効果を奏するもの栓提供できる。(5) Since no slit is provided in the thread of the locking part of the first screw member, and the flank angle of the side surface of the distal end is made small, there is not only no decrease in the strength of the thread of the turning part;
By reducing the flank angle of the tip, the wall thickness of the threaded tip increases and its strength increases, so a slight reduction in the flank of the threaded tip provides sufficient loosening. We can provide plugs that are effective.
第１図ないし第４図はこの発明に係るセルフロックキン
グねじ部材の実施例を示すもので、第１図はその第１ね
じ部材としてのボルトのねじ山の拡大説明図、第２図は
その第２ねじ部材としてのナツトのねじ山の拡大説明図
、第３図は第１゜第２ねじ部材の係台状統の説明図、第
４図はその要部の拡大説明図、第５図はこの発明に係る
セルフロックねじ部材としてのボルトの転造用ダイスの
ダイス面の平面図、第６図は従来のセルフロックねじ部
材の要部拡大説明図である。
１１・・・・・・ナツト、 １２・・・・・・第
２ねじ山。
１６・・・・・・ねじ山側面、 ２１・・・・・・ボ
ルト、２２・・・・・・第１ねじ山、
２２Ａ・・・・・・誘導部ねじ山、
２２Ｂ・・・・・・縞付部ねじ山、
２４・・・・・・根元部、 ２６・・・・・・ね
じ山側面、２６Ａ・・・・・・根元部側面、 ２６Ｂ・
・・・・・先端部側面、２９・・・・・・側面中央部、
α□・・・・・・誘導部ねじ山フランク角、α２・・・
・・・根元部フランク角、
α、・・・・・・先端部フランク角、
α、・・・・・・ねじ山フランク角差、β、・・・・・
・ナツトねじ山フランク角。
出原人 ロックシール株式会社1 to 4 show an embodiment of the self-locking screw member according to the present invention, FIG. 1 is an enlarged explanatory view of the thread of the bolt as the first screw member, and FIG. An enlarged explanatory view of the thread of the nut as the second screw member, Fig. 3 is an explanatory view of the lattice-like structure of the first and second screw members, Fig. 4 is an enlarged explanatory view of the main part thereof, and Fig. 5 6 is a plan view of the die surface of a bolt rolling die as a self-locking screw member according to the present invention, and FIG. 6 is an enlarged explanatory view of the main part of a conventional self-locking screw member. 11... Nut, 12... Second screw thread. 16...Screw thread side surface, 21...Bolt, 22...First thread thread, 22A...Guidance thread thread, 22B...・Striped part thread, 24... Root part, 26... Screw thread side, 26A... Root part side, 26B.
...Tip side, 29...Central side, α□...Guide thread flank angle, α2...
... Root flank angle, α, ... Tip flank angle, α, ... Thread flank angle difference, β, ...
・Nut thread flank angle. Izuhara Rock Seal Co., Ltd.
Claims (2)
て所定のフランク角で収束する二つの側面とからなる螺
旋状の第１ねじ山を有する第１ねじ部材と、該第１ねじ
部材の第１ねじ山に係合する第２ねじ山を有し、該第２
ねじ山がその根元部及び先端部と、前記根元部から先端
部に向って所定のフランク角で収束する二つの側面から
なる第２ねじ部材との組合せからなり、前記第１ねじ部
材の第１ねじ山が、その端部に１ないし３の螺合誘導部
ねじ山と、該螺合誘導部ねじ山に続く緩止め部ねじ山と
により構成され、かつ、前記緩止め部ねじ山の側面フラ
ンク角を、その根元部から側面中央部までの根元部フラ
ンク角が、前記第１ねじ部材端部の誘導部ねじ山側面の
フランク角と等しく、その側面中央部から先端部までの
先端部ねじ山側面のフランク角が、前記根元部フランク
角より小さく構成されていることを特徴とするセルフロ
ックねじ部材。(1) A first threaded member having a first spiral thread consisting of a root portion, a tip portion, and two side surfaces that converge at a predetermined flank angle from the root portion toward the tip portion; a second thread that engages the first thread of the threaded member;
The thread consists of a combination of a root and a tip, and a second screw member consisting of two side surfaces that converge at a predetermined flank angle from the root to the tip; The screw thread is constituted by one to three screw threads at the end thereof, and a locking thread following the screw threads, and a side flank of the locking thread. The root flank angle from the root to the center of the side surface is equal to the flank angle of the side of the guide thread at the end of the first screw member, and the tip end thread from the center of the side to the tip. A self-locking screw member characterized in that a side flank angle is smaller than the base flank angle.
フランク角を６０°に構成すると共に、前記緩止め部ね
じ山の前記根元部フランク角を６０°に、また、前記緩
止め部ねじ山の先端部フランク角を５５°ないし２０°
に構成したことを特徴とする請求項（１）記載のセルフ
ロックねじ部材。(2) The flank angle of the guide portion screw of the first screw thread of the first screw member is configured to be 60°, and the root portion flank angle of the locking portion screw is configured to be 60°; Adjust the flank angle of the tip of the stopper thread to 55° to 20°.
The self-locking screw member according to claim 1, characterized in that the self-locking screw member is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9176889A JPH02271103A (en) | 1989-04-13 | 1989-04-13 | Self-locking screw member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9176889A JPH02271103A (en) | 1989-04-13 | 1989-04-13 | Self-locking screw member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02271103A true JPH02271103A (en) | 1990-11-06 |
Family
ID=14035745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9176889A Pending JPH02271103A (en) | 1989-04-13 | 1989-04-13 | Self-locking screw member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02271103A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013030970A1 (en) * | 2011-08-31 | 2015-03-23 | 株式会社青山製作所 | Anti-seizure nut |
| JP2015187493A (en) * | 2014-03-11 | 2015-10-29 | 辻坂 宏 | Male screw having slackness preventing function, and method for manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176810A (en) * | 1986-12-19 | 1988-07-21 | マスコ インダストリーズ，インコーポレーテッド | Male screw member and clamping tool |
-
1989
- 1989-04-13 JP JP9176889A patent/JPH02271103A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176810A (en) * | 1986-12-19 | 1988-07-21 | マスコ インダストリーズ，インコーポレーテッド | Male screw member and clamping tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013030970A1 (en) * | 2011-08-31 | 2015-03-23 | 株式会社青山製作所 | Anti-seizure nut |
| JP2015187493A (en) * | 2014-03-11 | 2015-10-29 | 辻坂 宏 | Male screw having slackness preventing function, and method for manufacturing the same |
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