JPH10141343A - Seizure prevention bolt - Google Patents
Seizure prevention boltInfo
- Publication number
- JPH10141343A JPH10141343A JP30485296A JP30485296A JPH10141343A JP H10141343 A JPH10141343 A JP H10141343A JP 30485296 A JP30485296 A JP 30485296A JP 30485296 A JP30485296 A JP 30485296A JP H10141343 A JPH10141343 A JP H10141343A
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- nut
- bolt shaft
- thread
- rod 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
Links
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
(57)【要約】
【課題】 ナットに対して偏心状態あるいは傾斜状態で
挿入したときにも、ボルトを正しい方向に自然にガイド
し、焼付きの発生を防止することができる焼付き防止ボ
ルトを提供する。
【解決手段】 ボルト軸部２の先端に小径の棒先部４を
その一方の外側面がボルト軸部２の外側面と一致するよ
う偏心させて形成する。棒先部４の一方の外側面にボル
ト軸部の完全ねじ部３から連続した完全ねじ山５を形成
し、反対側の部分にボルト軸部２の完全ねじ部３につな
がるテーパねじ部６を形成する。棒先部４は小径のため
ナットの容易に挿入され、テーパねじ部６と完全ねじ山
５が優れたガイド性を発揮する。
(57) [Problem] An anti-seizure bolt capable of naturally guiding a bolt in a correct direction even when inserted in an eccentric state or an inclined state with respect to a nut and preventing occurrence of seizure. provide. A small-diameter rod tip (4) is formed at the tip of a bolt shaft (2) so as to be eccentric so that one of its outer surfaces coincides with the outer surface of the bolt shaft (2). On one outer surface of the rod tip portion 4, a continuous full thread 5 is formed from the complete thread portion 3 of the bolt shaft portion, and a taper thread portion 6 connected to the complete thread portion 3 of the bolt shaft portion 2 is formed on the opposite side. Form. Since the rod tip 4 is small in diameter, the nut is easily inserted into the nut, and the tapered thread 6 and the complete thread 5 exhibit excellent guiding properties.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車等に用いら
れる焼付き防止ボルトに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-seizure bolt used for automobiles and the like.
【０００２】[0002]
【従来の技術】通常のボルトは、ボルト軸部の完全ねじ
部の先端が平面またはアール面となっており、ナットに
対してボルトを挿入する際に、ボルトを正しい方向にガ
イドする機能（ガイド性）が悪いのが普通である。この
ため、ナットに対してボルトを傾けて挿入して締め付け
た場合には、図５に示すようにボルトのねじ山とナット
のねじ山とが交差し、焼付きが生じてしまうおそれがあ
った。2. Description of the Related Art In a normal bolt, a tip of a completely threaded portion of a bolt shaft portion has a flat or round surface, and a function of guiding a bolt in a correct direction when a bolt is inserted into a nut (a guide). Sex) is usually bad. For this reason, when the bolt is inclined with respect to the nut and inserted and tightened, the thread of the bolt and the thread of the nut may intersect as shown in FIG. 5 and seizure may occur. .
【０００３】また、ボルト軸部の先端部中心にボルト軸
部よりも小径の棒状部を設けた棒先ボルトも知られてい
る。しかしこの棒状部は、ナットに対してボルトが偏心
状態で挿入されたときのガイド性には優れているもの
の、ナットに対してボルトを傾けて挿入した場合に、ボ
ルトを正しい方向にガイドする機能は少ない。このため
この棒先ボルトも、ナットに対してボルトを傾けて挿入
して締め付けた場合には、焼付きが生じることがあっ
た。There is also known a rod-end bolt having a rod-shaped portion having a smaller diameter than the bolt shaft at the center of the tip of the bolt shaft. However, although this rod-like part has excellent guideability when the bolt is inserted eccentrically to the nut, it functions to guide the bolt in the correct direction when the bolt is inserted with the nut inclined. Is less. For this reason, when this rod-end bolt is inserted and tightened by inclining the bolt with respect to the nut, seizure may occur.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、ナットに対してボルトを偏心状態あ
るいは傾斜状態で挿入したときにも、ボルトを正しい方
向に自然にガイドし、焼付きの発生を防止することがで
きる焼付き防止ボルトを提供するためになされたもので
ある。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and naturally guides a bolt in a correct direction even when the bolt is inserted in an eccentric state or an inclined state with respect to a nut. The present invention has been made to provide an anti-seizure bolt capable of preventing the occurrence of seizure.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の焼付き防止ボルトは、完全ねじ部
を備えたボルト軸部の先端に、ボルト軸部よりも小径の
棒先部をその一方の外側面がボルト軸部の外側面と一致
するよう偏心させて形成するとともに、この棒先部の一
方の外側面にもボルト軸部の完全ねじ部から連続した完
全ねじ山を形成し、また棒先部の完全ねじ山とは反対側
の部分とボルト軸部との接続部に、ボルト軸部の完全ね
じ部につながるテーパねじ部を形成したことを特徴とす
るものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. According to the present invention, an anti-seizure bolt is provided at a tip end of a bolt shaft portion having a completely threaded portion with a rod tip having a smaller diameter than the bolt shaft portion. The part is formed so as to be eccentric so that one of its outer surfaces coincides with the outer surface of the bolt shaft part, and a complete thread continuous from the complete screw part of the bolt shaft part is also formed on one outer surface of this rod tip. And a taper screw portion connected to the complete screw portion of the bolt shaft portion is formed at a connecting portion between the portion of the rod tip portion opposite to the complete screw thread and the bolt shaft portion. .
【０００６】[0006]
【発明の実施の形態】以下に本発明の実施の形態を、図
面を参照しつつ説明する。図１は本発明の焼付き防止ボ
ルトの一実施形態を示す正面図及び底面図であり、１は
ツバ付き６角形状のボルト頭部、２はボルト軸部、３は
ボルト軸部２に形成された完全ねじ部である。この完全
ねじ部３の先端には、棒先部４が形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view and a bottom view showing an embodiment of an anti-seizure bolt according to the present invention, wherein 1 is a hexagonal bolt head with a flange, 2 is a bolt shaft, and 3 is a bolt shaft 2. It is a completely screwed part. A rod tip 4 is formed at the tip of the complete screw portion 3.
【０００７】この棒先部４はねじサイズが例えば８mm
で、ボルト軸部２よりも約1.2 mm程度小径の円柱状のも
のであって、図示のとおり棒先部４の一方の外側面が完
全ねじ部３の外側面と一致するよう偏心させて形成され
ている。また棒先部４の完全ねじ部３の外側面と一致す
る外側面にも、完全ねじ部３から連続した完全ねじ山５
が形成されている。The rod tip 4 has a screw size of, for example, 8 mm.
And is formed in a cylindrical shape having a diameter smaller than that of the bolt shaft portion 2 by about 1.2 mm, and is formed so as to be eccentric so that one outer surface of the rod tip portion 4 coincides with the outer surface of the complete screw portion 3 as shown in the figure. Have been. The outer surface of the rod tip 4 that coincides with the outer surface of the completely threaded portion 3 also has a full thread 5 continuous from the completely threaded portion 3.
Are formed.
【０００８】上記のように棒先部４は偏心させて形成さ
れているため、完全ねじ山５が形成された側と反対側で
はボルト軸部２の完全ねじ部３との接続部に段差が生じ
ることとなる。本発明ではこの部分に、ボルト軸部２の
完全ねじ部３につながるテーパねじ部６を形成してあ
る。なお、この実施の形態では棒先部４の先端面７は平
面とされている。As described above, since the rod tip 4 is formed eccentrically, there is a step in the connection between the bolt shaft 2 and the complete thread 3 on the side opposite to the side where the complete thread 5 is formed. Will occur. In the present invention, a tapered screw portion 6 connected to the complete screw portion 3 of the bolt shaft portion 2 is formed in this portion. In this embodiment, the tip end surface 7 of the rod tip 4 is flat.
【０００９】このように構成された本発明の焼付き防止
ボルトは、図２のようにナット８に対して偏心状態にあ
るときにも、棒先部４は完全ねじ部３よりも若干小径に
形成されているため、ナット８に容易に挿入される。そ
して棒先部４とボルト軸部２との接続部のテーパねじ部
６がナット８のめねじ部９の端部に接触すると、テーパ
ねじ部６がナット８のめねじ部９を捉えながらボルト軸
部２を自然にナット８の中心にガイドし、棒先部４の完
全ねじ山５がナット８のめねじ部９と正しくかみ合う。
さらにボルトが回転されると、ボルト軸部２の完全ねじ
部３がナット８のめねじ部９とかみ合い、スムーズに締
め付けが行われる。With the anti-seizure bolt of the present invention thus constructed, even when the bolt 8 is eccentric with respect to the nut 8 as shown in FIG. Since it is formed, it is easily inserted into the nut 8. When the tapered thread 6 at the connection between the rod tip 4 and the bolt shaft 2 comes into contact with the end of the female thread 9 of the nut 8, the tapered thread 6 grasps the female thread 9 of the nut 8 and tightens the bolt. The shaft portion 2 is naturally guided to the center of the nut 8, and the complete thread 5 of the rod tip portion 4 is properly engaged with the female thread portion 9 of the nut 8.
When the bolt is further rotated, the complete screw portion 3 of the bolt shaft portion 2 meshes with the female screw portion 9 of the nut 8, and the tightening is performed smoothly.
【００１０】また本発明の焼付き防止ボルトは、図３や
図４に示すようにナット８に対して左右に傾斜状態で挿
入された時にも、棒先部４のテーパねじ部６がナット８
のめねじ部９を捉えながらボルト軸部２をガイドし、棒
先部４の完全ねじ山５をナット８のめねじ部９に正しく
かみ合わせることができる。このため、さらにボルトが
回転されるとボルト軸部２の完全ねじ部３がナット８の
めねじ部９とかみ合い、従来のような焼付きを生じるこ
となく締め付けが行える。The anti-seizure bolt of the present invention is also capable of maintaining the tapered thread portion 6 of the rod tip 4 in the nut 8 even when the bolt is inserted into the nut 8 in an inclined state to the left and right as shown in FIGS.
By guiding the bolt shaft portion 2 while grasping the female screw portion 9, the complete thread 5 of the rod tip portion 4 can be correctly engaged with the female screw portion 9 of the nut 8. For this reason, when the bolt is further rotated, the complete screw portion 3 of the bolt shaft portion 2 meshes with the female screw portion 9 of the nut 8, and the tightening can be performed without causing the conventional seizure.
【００１１】[0011]
【発明の効果】このように、本発明の焼付き防止ボルト
はボルト軸部２に対して該ボルト軸部２より小径の棒先
部４を偏心させるとともに、棒先部４の片側に完全ねじ
山５を、またその反対側にテーパねじ部６を設けたこと
により、挿入時のガイド性を向上させたものである。こ
のため、ナット８に対して偏心状態あるいは傾斜状態で
挿入されたときにも、ボルト軸部２を正しい方向に自然
にガイドし、焼付きの発生を防止することができる利点
がある。よって本発明の焼付き防止ボルトは、自動機に
よりボルトの挿入・締め付けを行う組み立てライン等に
用いるに好適なものである。As described above, the anti-seizure bolt of the present invention eccentricizes the rod tip 4 having a smaller diameter than the bolt shaft 2 and a complete screw on one side of the rod tip 4. By providing the ridge 5 and the tapered screw portion 6 on the opposite side, the guideability at the time of insertion is improved. Therefore, even when the bolt shaft portion 2 is inserted into the nut 8 in an eccentric state or an inclined state, there is an advantage that the bolt shaft portion 2 can be naturally guided in a correct direction and seizure can be prevented. Therefore, the anti-seizure bolt of the present invention is suitable for use in an assembly line or the like in which the bolt is inserted and tightened by an automatic machine.
【図１】本発明の焼付き防止ボルトを示す図であり、
(A) は正面図、(B) は底面図である。FIG. 1 is a view showing an anti-seizure bolt according to the present invention;
(A) is a front view and (B) is a bottom view.
【図２】本発明の焼付き防止ボルトを、ナットに対して
偏心状態で挿入したときの断面図である。FIG. 2 is a cross-sectional view when the anti-seizure bolt of the present invention is inserted in an eccentric state with respect to a nut.
【図３】本発明の焼付き防止ボルトを、ナットに対して
傾斜状態で挿入したときの断面図である。FIG. 3 is a cross-sectional view when the anti-seizure bolt of the present invention is inserted in an inclined state with respect to a nut.
【図４】本発明の焼付き防止ボルトを、ナットに対して
傾斜状態で挿入したときの断面図である。FIG. 4 is a cross-sectional view when the anti-seizure bolt of the present invention is inserted in an inclined state with respect to a nut.
【図５】従来のボルトを、ナットに対して傾斜状態で挿
入したときの断面図である。FIG. 5 is a sectional view when a conventional bolt is inserted in an inclined state with respect to a nut.
１ ボルト頭部 ２ ボルト軸部 ３ 完全ねじ部 ４ 棒先部 ５ 棒先部の完全ねじ山 ６ テーパねじ部 ７ 棒先部の先端面 ８ ナット ９ ナットのめねじ部 Reference Signs List 1 bolt head 2 bolt shaft part 3 complete screw part 4 rod tip part 5 complete screw thread of rod tip part 6 taper thread part 7 tip end face of rod tip part 8 nut 9 female nut part of nut
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成８年１１月２１日[Submission date] November 21, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図１[Correction target item name] Fig. 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図１】 FIG.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図２[Correction target item name] Figure 2
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図２】 FIG. 2
【手続補正３】[Procedure amendment 3]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図３[Correction target item name] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図３】 FIG. 3
【手続補正４】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図４[Correction target item name] Fig. 4
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図４】 FIG. 4
Claims (1)
に、ボルト軸部よりも小径の棒先部をその一方の外側面
がボルト軸部の外側面と一致するよう偏心させて形成す
るとともに、この棒先部の一方の外側面にもボルト軸部
の完全ねじ部から連続した完全ねじ山を形成し、また棒
先部の完全ねじ山とは反対側の部分とボルト軸部との接
続部に、ボルト軸部の完全ねじ部につながるテーパねじ
部を形成したことを特徴とする焼付き防止ボルト。1. A rod tip having a smaller diameter than the bolt shaft is formed eccentrically at the tip of a bolt shaft provided with a completely threaded portion such that one outer surface thereof is aligned with the outer surface of the bolt shaft. At the same time, a complete thread continuous from the complete thread of the bolt shaft is formed on one outer surface of the rod tip, and the portion of the rod tip opposite to the complete thread and the bolt shaft are formed. A seizure prevention bolt, characterized in that a tapered threaded portion connected to a complete threaded portion of the bolt shaft portion is formed in the connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30485296A JPH10141343A (en) | 1996-11-15 | 1996-11-15 | Seizure prevention bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30485296A JPH10141343A (en) | 1996-11-15 | 1996-11-15 | Seizure prevention bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10141343A true JPH10141343A (en) | 1998-05-26 |
Family
ID=17938062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30485296A Pending JPH10141343A (en) | 1996-11-15 | 1996-11-15 | Seizure prevention bolt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10141343A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010038446A1 (en) | 2008-10-02 | 2010-04-08 | Aoyama Seisakusho Co., Ltd. | Anti cross-thread bolt |
| WO2013030970A1 (en) | 2011-08-31 | 2013-03-07 | 株式会社青山製作所 | Anti-seizing nut |
| WO2013179788A1 (en) | 2012-06-01 | 2013-12-05 | 株式会社青山製作所 | Anti-seizing bolt |
-
1996
- 1996-11-15 JP JP30485296A patent/JPH10141343A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010038446A1 (en) | 2008-10-02 | 2010-04-08 | Aoyama Seisakusho Co., Ltd. | Anti cross-thread bolt |
| US8632288B2 (en) | 2008-10-02 | 2014-01-21 | Aoyama Seisakusho Co., Ltd. | Anti cross-thread bolt |
| WO2013030970A1 (en) | 2011-08-31 | 2013-03-07 | 株式会社青山製作所 | Anti-seizing nut |
| US9022710B2 (en) | 2011-08-31 | 2015-05-05 | Aoyama Seisakusho Co., Ltd. | Anti-seizing nut |
| WO2013179788A1 (en) | 2012-06-01 | 2013-12-05 | 株式会社青山製作所 | Anti-seizing bolt |
| KR20150014836A (en) | 2012-06-01 | 2015-02-09 | 가부시키가이샤 아오야마 세이사쿠쇼 | Anti-seize bolt |
| US9664223B2 (en) | 2012-06-01 | 2017-05-30 | Aoyama Seisakusho Co., Ltd. | Seizure prevention bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20010511 |