JPH0379567B2 - - Google Patents
Info
- Publication number
- JPH0379567B2 JPH0379567B2 JP57135459A JP13545982A JPH0379567B2 JP H0379567 B2 JPH0379567 B2 JP H0379567B2 JP 57135459 A JP57135459 A JP 57135459A JP 13545982 A JP13545982 A JP 13545982A JP H0379567 B2 JPH0379567 B2 JP H0379567B2
- Authority
- JP
- Japan
- Prior art keywords
- tapered
- thread
- groove
- male
- female thread
- 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
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 10
- 238000005452 bending Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
この発明はおねじ部材とめねじ部材とを螺着す
るテーパねじのフアスナに関する。
従来、たとえば石油堀削用ドリルパイプおよび
カツプリング等にはAPI（American Petroleum
Institute）規格にしたがつてラウンドねじ、バツ
トレスねじ等のテーパねじが螺刻されている。こ
のため上記テーパねじの嵌合検査にはラウンドね
じまたはバツトレスねじを螺刻したテーパねじゲ
ージが使用されている。
このテーパねじゲージを使用する手動締付け嵌
合検査方法、とくにバツトレスねじの嵌合検査で
は第１図に示すように、外周面にテーパバツトレ
スおねじ（以下テーパおねじという）２２を螺刻
したテーパおねじゲージ２１を、内周面にテーパ
バツトレスめねじ（以下テーパめねじという）３
２を螺刻したカツプリング３１へ両者が相対的に
傾かないよう同一軸心上に降下させ、テーパおね
じ２２の山２２Ａとテーパめねじ３２の山３２Ａ
とが面接触状態で当接したとき、たとえ少量のね
じ油を滴下してもそれ以上テーパおねじゲージ２
１をカツプリング３１へ螺合できないという「喰
いつき現象」がしばしば発生する。
このため、テーパおねじゲージ２１を回動上昇
させて元の位置へもどす。その後再び慎重に同一
軸心上を降下回動させて両者の螺合開始部位を感
覚的にさがし出し、つぎにテーパおねじゲージ２
１を螺旋状に回動降下させると、テーパおねじの
山２２Ａはテーパめねじ３２の谷３２Ｂに向つて
進行して螺合し、所定の締付けトルク（0.75〜
1.50Kg−ｍ）による締付け終了時のスタンドオフ
値（テーパおねじ２２の螺刻終了部位２２Ｓとカ
ツプリング３１の上端面３１Ｓとの間の距離）
SOが許容値（次表参照）内であるかどうかを目
視計測して記録する。その後手動でテーパおねじ
ゲージ２１を逆回動上昇させてカツプリング３１
との螺合を解放し、テーパめねじの嵌合検査が終
了する。
The present invention relates to a tapered screw fastener for screwing together a male threaded member and a female threaded member. Conventionally, API (American Petroleum) was used for oil drilling drill pipes and coupling rings.
Tapered screws such as round screws and buttress screws are threaded according to the Institute) standards. For this reason, a taper thread gauge with a round thread or a buttress thread is used to inspect the fit of the tapered thread. In the manual tightening fitting inspection method using this taper thread gauge, especially the fitting inspection of buttless screws, as shown in Fig. 1, a tapered buttress male thread (hereinafter referred to as a tapered male thread) 22 is threaded on the outer circumferential surface. A tapered male thread gauge 21 is attached to a tapered buttless female thread (hereinafter referred to as a tapered female thread) 3 on the inner peripheral surface.
2 into the coupling ring 31 with threads engraved thereon, lower the threads 22A of the tapered male thread 22 and the thread 32A of the tapered female thread 32 onto the same axis so that they do not tilt relative to each other.
When the two are in surface contact, even if a small amount of thread oil is dropped, the taper
A "sticking phenomenon" in which the screw 1 cannot be screwed into the coupling 31 often occurs. Therefore, the tapered male thread gauge 21 is rotated upward and returned to its original position. After that, carefully lower and rotate the screws on the same axis again to sensually find the starting point for screwing together, and then use the tapered male thread gauge 2.
1 is spirally rotated downward, the crest 22A of the tapered male thread advances toward the valley 32B of the tapered female thread 32, and is screwed together with a predetermined tightening torque (0.75~
1.50Kg-m) at the end of tightening (distance between the threaded end portion 22S of the tapered male screw 22 and the upper end surface 31S of the coupling ring 31)
Visually measure and record whether the SO is within the allowable values (see table below). After that, manually rotate the taper male thread gauge 21 in the opposite direction and raise the coupling ring 31.
The threaded connection with the tapered female thread is released, and the fitting inspection of the tapered female thread is completed.
【表】
この発明は上記「喰いつき現象」の発生を防止
すること、および、めねじ部材とおねじ部材とが
僅かの軸心ずれ状態におかれていてもねじの螺合
を誘導し、以後の全面螺合を円滑容易ならしめる
フアスナを提供することを目的とする。
この発明の要旨は、テーパおねじを螺刻したお
ねじ部材、またはテーパめねじを螺刻しためねじ
部材のうち、いづれか一方のテーパねじ螺刻部
に、該テーパねじの山へ接続可能な案内部材、た
とえば凹溝を螺刻し、該凹溝内へ約１巻き分のコ
イル状に形成した可変形パイロツトリング、リー
フ等を係止手段により遊嵌したフアスナである。
以下、この発明の実施例として、内周面にテー
パめねじを螺刻したカツプリングと、外周面にテ
ーパおねじを螺刻したテーパおねじゲージとの嵌
合検査例を第２〜１０図によつて説明する。
第２，３図に示す１は外周面に所定のテーパお
ねじ５を螺刻したテーパおねじゲージで、２はテ
ーパおねじゲージ１の先端部である。３は先端部
２に螺刻した凹溝（横断面形状はＵ字形、Ｖ字
形、半円形、ストレートねじ形でもよい）で、テ
ーパおねじの山５Ａへ接続されるように、テーパ
おねじ５と同一ピツチ、同一リード角で螺刻され
ている。６は凹溝３内で収縮、拡開自在に遊嵌し
たパイロツトリングで、金属、プラスチック、ゴ
ム等で構成している。このパイロツトリング６の
横断面形状は長方形で、外周面はほぼ半円形（丸
山形、平山形でもよい）であり、外周面の直径は
テーパおねじの山５Ａ，５Ａとを結ぶ仮想下向き
円すい台Ｐ−Ｑ−Ｒ−Ｓの円周面の直径よりも僅
かに大きく、内周面の直径は螺合時の収縮代を見
込んで凹溝３の底径よりも僅かに大きく、厚さは
凹溝３の幅よりも僅かに小さく、約１巻き分のコ
イル状に形成し、第４図に示すように両端部６
Ａ，６Ｂはテーパおねじ５のほぼ１ピツチに相当
する距離だけ変位している。第５，６図に示す
７，８は凹溝３内へ遊嵌したパイロツトリング６
の円周方向への縮み代を許容する位置に穿設した
ピン穴３Ｄへ嵌入した止めピンである。
つぎにこの発明の作動態様を説明する。
上記のような構成からなるテーパおねじゲージ
１を第２図に示すようにテーパめねじ３２を螺刻
したカツプリング３１とほぼ同一軸線上に配置
し、テーパおねじゲージ１を適当手段により徐々
にカツプリング３１へ降下させると、テーパおね
じ５とテーパめねじ３２とが当接する直前に、ま
ずパイロツトリング６がテーパめねじの山３２Ａ
へ当接して少し内側へ収縮する。ついでさらにテ
ーパおねじゲージ１が少し降下するとパイロツト
リング６はテーパめねじの谷３２Ｂへ嵌入し、そ
の弾発力で元の遊嵌状態へ拡開する。このような
状態でテーパおねじゲージ１を螺旋状に回動降下
させると、パイロツトリング６に後続するテーパ
おねじの山５Ａはテーパめねじの谷３２Ｂへ誘導
されるため、両者間に僅かの軸心ずれがあつて
も、テーパおねじ５とテーパめねじ３２とは同一
軸心上へ調心され、きわめて円滑な螺合が進行す
る。したがつて、上記所定の締付けトルクが与え
られたテーパおねじゲージ１はカツプリング３１
へ螺合され、締付け終了時におけるスタンドオフ
値SOが許容値以内かどうかを上記同様に目視計
測して記録する。その後適当手段でテーパおねじ
ゲージ１を逆回動上昇させてカツプリング３１と
の螺合を解放し、テーパめねじ５の嵌合検査が終
了する。
なお、上記実施例ではパイロツトリング６をそ
の両端部近傍に穿設した止めピン穴３Ｄへ嵌入さ
せた止めピン７，８で係止していたが、第７図に
示すように一方の端部を内側に屈曲して脚９Ａを
形成したパイロツトリング９では、脚９Ａを止め
ピン穴３Ｄに嵌入させて係止すること、第８図に
示すように内周面に半円形凸部１０Ａを形成した
パイロツトリング１０では、半円形凸部１０を凹
溝３に刻設した半円形凹溝３Ｅへ嵌入させて係止
すること、第９図に示すように蛇行させた薄肉パ
イロツトリング１１では、一方の端部を内側に屈
曲して脚１１Ａを形成し、この脚１１Ａを止めピ
ン穴３Ｄに嵌入させて係止すること、また上記パ
イロツトリングに代えて第１０図に示すように３
枚１組のリーフ１２を凹溝３へ嵌入し、各リーフ
１２に形成した切込み溝１２Ａ内へキー１３を挿
入し、このキー１３を凹溝３に固着するとともに
引張りばね１４の一端を掛止めし、該引張りばね
１４の他端をリーフ１２に掛止めすることなど係
止手段として機多の変形が可能である。
つぎにこの発明に係る他の実施例として、外周
面にテーパおねじを螺刻したドリルパイプと、内
周面にテーパめねじを螺刻したテーパめねじゲー
ジとの嵌合検査例を第１１，１２図によつて説明
する。
両図において、４１は内周面に所定のテーパめ
ねじ４２を螺刻したテーパめねじゲージ、４３は
テーパめねじゲージ４１の前端面に固着したアダ
プタである。４４はアダプタ４３の内周面に螺刻
した凹溝（横断面形状はＵ字形、Ｖ字形、半円形
でもよい）で、テーパめねじの山４２Ａへ接続さ
れるように、テーパめねじ４２と同一ピツチ、同
一リード角で螺刻されている。４５は凹溝４４内
で拡開、収縮自在に遊嵌したパイロツトリング
で、金属、プラスチック、ゴム等で構成してい
る。このパイロツトリング４５の横断面形状は長
方形で、内周面は半円形（丸山形、平山形でもよ
い）であり、内周面の直径はテーパめねじの山４
２Ａ，４２Ａとを結ぶ仮想上向き（第１１図では
右向き）円錐台P′−Q′−R′−S′の円周面の直径よ
りも僅かに小さく、外周面の直径は螺合時の拡開
代を見込んで凹溝４４の底径よりも僅かに小さ
く、厚さは凹溝４４の幅よりも僅かに小さく、約
１巻き分のコイル状に形成し、第１３図に示すよ
うに両端部４５Ａ，４５Ｂはテーパめねじ４２の
ほぼ１ピツチに相当する距離だけ変位している。
４６，４７は凹溝４４内に遊嵌したパイロツトリ
ング４５の円周方向への拡開代を許容する位置に
立設した止めピンである。
上記のような構成からなるテーパめねじゲージ
４１を第１１図に示すように、テーパおねじ５２
を螺刻したドリルパイプ５１とほぼ同一軸心上へ
配置し、つぎにテーパめねじゲージ４１を適当手
段により徐々にドリルパイプ５１に向つて前進さ
せると、テーパめねじ４２とテーパおねじ５２と
が当接する直前に、まずパイロツトリング４５が
テーパおねじ５２の山５２Ａへ当接して少し外側
へ拡開する。ついでさらにテーパめねじゲージ４
１が少し前進するとパイロツトリング４５はテー
パおねじの谷５２Ｂへ嵌入し、その弾発力で元の
遊嵌状態へ収縮する。このような状態でテーパめ
ねじゲージ４１を螺旋状に回動前進させると、パ
イロツトリング４５に後続するテーパめねじの山
４２Ａはテーパおねじの谷５２Ｂへ誘導されるた
め、両者間に僅かの軸心ずれがあつてもテーパめ
ねじ４２とテーパおねじ５２とは同一軸心上へ調
心され、きわめて円滑な螺合が進行する。したが
つて、上記所定の締付トルクが与えられたテーパ
めねじゲージ４１はドリルパイプ５１へ螺合さ
れ、締付け終了時におけるスタンドオフ値SOが
許容値以内かどうかを上記同様に目視計測して記
録する。その後適当手段でテーパめねじゲージ４
１を回動後退させてドリルパイプ５１との螺合を
解放し、テーパおねじ５２の嵌合検査が終了す
る。
以上のとおりこの発明に係るフアスナは、めね
じ部材とおねじ部材のいづれか一方のテーパねじ
螺刻部に該テーパねじの山へ接続する可変形のパ
イロツトリングのような案内部材が遊嵌されてい
るため、先にパイロツトリングが相手ねじの谷へ
嵌入し、ついでテーパねじの山が進入することに
より上記「喰いつき現象」が発生しなくなるとと
もに、テーパねじ面を損傷させない等の効果、お
よび螺合前めねじ部材とおねじ部材間に多少の軸
心ずれがあつても、螺合中に上記パイロツトリン
グの誘導により調心状態へ移向して両部材が円滑
に螺合されるため、著しく作業性を改善できると
いう効果を奏する。[Table] This invention prevents the above-mentioned "biting phenomenon" from occurring, and even if the female threaded member and the male threaded member are placed in a state where the axes are slightly misaligned, the screws are guided to be screwed together. The object of the present invention is to provide a fastener that can be smoothly and easily screwed together over the entire surface. The gist of the present invention is that the threaded portion of either one of a male threaded member with a tapered male thread or a female threaded member with a tapered female thread is connectable to the crest of the tapered thread. This is a fastener in which a guide member, for example, a variable pilot ring, a leaf, etc. formed in a coil shape with approximately one turn, is loosely fitted into the groove by a locking means. As an embodiment of the present invention, Figs. 2 to 10 show fitting inspection examples of a coupling ring having a tapered female thread carved on its inner circumferential surface and a tapered male thread gauge having a tapered male thread carved on its outer circumferential surface. Let me explain. Reference numeral 1 shown in FIGS. 2 and 3 is a tapered male thread gauge having a predetermined tapered male thread 5 carved on its outer peripheral surface, and 2 is the tip of the tapered male thread gauge 1. 3 is a concave groove (the cross-sectional shape may be U-shaped, V-shaped, semicircular, or straight threaded) threaded on the tip 2; It is threaded with the same pitch and lead angle. Reference numeral 6 denotes a pilot ring loosely fitted in the groove 3 so as to be freely contractable and expandable, and is made of metal, plastic, rubber, or the like. The cross-sectional shape of this pilot ring 6 is rectangular, the outer circumferential surface is approximately semicircular (may be a round mountain shape or a flat mountain shape), and the diameter of the outer peripheral surface is an imaginary downward conical pedestal connecting the threads 5A, 5A of the tapered male thread. Slightly larger than the diameter of the circumferential surface of P-Q-R-S, the diameter of the inner circumferential surface is slightly larger than the bottom diameter of the concave groove 3 to allow for shrinkage during screwing, and the thickness is The width of the groove 3 is slightly smaller than that of the groove 3, and it is formed into a coil shape with approximately one turn, and both ends 6 are formed as shown in FIG.
A and 6B are displaced by a distance corresponding to approximately one pitch of the tapered male screw 5. 7 and 8 shown in FIGS. 5 and 6 are pilot rings 6 that are loosely fitted into the groove 3.
This is a stop pin fitted into a pin hole 3D drilled at a position that allows for shrinkage in the circumferential direction. Next, the operating mode of this invention will be explained. As shown in FIG. 2, the tapered male thread gauge 1 having the above-mentioned configuration is placed approximately on the same axis as the coupling ring 31 with the tapered female thread 32, and the tapered male thread gauge 1 is gradually inserted by an appropriate means. When the coupling ring 31 is lowered, just before the tapered male thread 5 and the tapered female thread 32 come into contact, the pilot ring 6 first touches the thread 32A of the tapered female thread.
It touches and contracts slightly inward. Then, when the tapered male thread gauge 1 further descends a little, the pilot ring 6 fits into the valley 32B of the tapered female thread, and expands to the original loosely fitted state by its elastic force. When the tapered male thread gauge 1 is spirally rotated and lowered in this state, the crest 5A of the tapered male thread following the pilot ring 6 is guided to the valley 32B of the tapered female thread, so there is a slight gap between the two. Even if there is an axial misalignment, the tapered male thread 5 and the tapered female thread 32 are aligned on the same axis, and the screwing progresses extremely smoothly. Therefore, the taper male thread gauge 1 to which the predetermined tightening torque is applied is attached to the coupling ring 31.
Visually measure and record whether the standoff value SO at the end of tightening is within the allowable value in the same manner as above. Thereafter, the tapered male thread gauge 1 is reversely rotated upward using an appropriate means to release the threaded engagement with the coupling ring 31, and the fitting inspection of the tapered female thread 5 is completed. In addition, in the above embodiment, the pilot ring 6 was locked with the stop pins 7 and 8 fitted into the stop pin holes 3D drilled near both ends of the pilot ring 6, but as shown in FIG. In the pilot ring 9 in which legs 9A are formed by bending the leg 9A inward, the leg 9A is fitted into the stop pin hole 3D and locked, and a semicircular convex portion 10A is formed on the inner peripheral surface as shown in FIG. In the pilot ring 10, the semicircular convex portion 10 is fitted into the semicircular groove 3E carved in the groove 3 and locked, and in the thin pilot ring 11 meandering as shown in FIG. The end of the leg 11A is bent inward to form a leg 11A, and the leg 11A is fitted into the stop pin hole 3D for locking.
A set of leaves 12 is fitted into the groove 3, a key 13 is inserted into the groove 12A formed in each leaf 12, the key 13 is fixed in the groove 3, and one end of the tension spring 14 is latched. However, many modifications can be made to the locking means, such as by hooking the other end of the tension spring 14 to the leaf 12. Next, as another embodiment of the present invention, a fitting inspection example of a drill pipe having a tapered male thread carved on the outer circumferential surface and a tapered female thread gauge having a tapered female thread carved on the inner circumferential surface will be described in the eleventh example. , 12. In both figures, 41 is a tapered female thread gauge with a predetermined tapered female thread 42 carved on its inner peripheral surface, and 43 is an adapter fixed to the front end surface of the tapered female thread gauge 41. 44 is a concave groove (the cross-sectional shape may be U-shaped, V-shaped, or semicircular) threaded on the inner circumferential surface of the adapter 43, and is connected to the tapered female thread 42 so as to be connected to the thread 42A of the tapered female thread. Screwed with the same pitch and lead angle. A pilot ring 45 is loosely fitted in the groove 44 so as to be expandable and contractible, and is made of metal, plastic, rubber, or the like. The cross-sectional shape of this pilot ring 45 is rectangular, the inner circumferential surface is semicircular (may be a round mountain shape or a flat mountain shape), and the diameter of the inner peripheral surface is equal to the diameter of the thread of the tapered female thread.
The diameter of the outer circumferential surface is slightly smaller than the diameter of the circumferential surface of the imaginary upward (rightward in FIG. 11) conical truncated cone P'-Q'-R'-S' connecting 2A and 42A, and the diameter of the outer circumferential surface is Taking into consideration the opening width, it is slightly smaller than the bottom diameter of the groove 44, the thickness is slightly smaller than the width of the groove 44, and it is formed into a coil shape with about one turn, and as shown in FIG. The portions 45A and 45B are displaced by a distance corresponding to approximately one pitch of the tapered female thread 42.
Reference numerals 46 and 47 designate retaining pins erected at positions that allow the pilot ring 45 loosely fitted into the groove 44 to expand in the circumferential direction. As shown in FIG.
When the tapered female thread gauge 41 is gradually advanced toward the drill pipe 51 by an appropriate means, the tapered female thread 42 and the tapered male thread 52 Immediately before contact, the pilot ring 45 first contacts the ridge 52A of the tapered male screw 52 and expands slightly outward. Next, taper female thread gauge 4
When the pilot ring 1 moves forward a little, the pilot ring 45 fits into the valley 52B of the tapered male thread, and its elastic force causes the pilot ring 45 to contract to its original loosely fitted state. When the tapered female thread gauge 41 is spirally rotated forward in this state, the crest 42A of the tapered female thread following the pilot ring 45 is guided to the valley 52B of the tapered male thread, so there is a slight gap between the two. Even if there is an axial misalignment, the tapered female thread 42 and the tapered male thread 52 are aligned on the same axis, and the screwing progresses extremely smoothly. Therefore, the taper female thread gauge 41 to which the predetermined tightening torque has been applied is screwed onto the drill pipe 51, and the standoff value SO at the end of tightening is visually measured in the same way as above to see if it is within the allowable value. Record. After that, taper female thread gauge 4 using appropriate means.
1 is rotated backward to release the threaded connection with the drill pipe 51, and the fitting inspection of the tapered external thread 52 is completed. As described above, in the fastener according to the present invention, a guide member such as a variable pilot ring connected to the thread of the tapered thread is loosely fitted into the tapered threaded portion of either the female thread member or the male thread member. Therefore, the pilot ring fits into the valley of the mating thread first, and then the crest of the tapered thread enters, which prevents the above-mentioned "biting phenomenon" and prevents damage to the tapered thread surface, as well as improving thread engagement. Even if there is some axial misalignment between the front female threaded member and the male threaded member, the pilot ring guides the two parts during screwing into alignment and the two parts are smoothly screwed together, making the work much easier. It has the effect of improving sex.
第１図は従来のねじ嵌合検査状態を示す側面
図、第２〜１０図はこの発明の実施例を示し、第
２図はテーパめねじの嵌合検査状態を示す側面
図、第３図は第２図に示すＡ部の部分断面拡大
図、第４図はパイロツトリングの斜視図、第５図
は第２図に示すＢ−B′矢視線に沿う部分断面平
面図、第６図は第２図に示すＣ−C′矢視線に沿う
部分断面平面図、第７，８，９および１０図は他
のパイロツトリングの係止状態を示す部分断面
図、第１１図はテーパおねじの嵌合検査状態を示
す部分断面側面図、第１２図は第１１図に示すＦ
部の部分断面拡大図、第１３図はパイロツトリン
グの斜視図である。
１……おねじ部材（テーパおねじゲージ）、３
……凹溝、５……テーパおねじ、６……案内部材
（パイロツトリング）、７，８……係止手段（止め
ピン）、３１……めねじ部材（カツプリング）、３
２……テーパめねじ。
Fig. 1 is a side view showing a conventional screw fitting inspection state, Figs. 2 to 10 show an embodiment of the present invention, Fig. 2 is a side view showing a tapered female thread fitting inspection state, and Fig. 3 is an enlarged partial sectional view of part A shown in FIG. 2, FIG. 4 is a perspective view of the pilot ring, FIG. 5 is a partial sectional plan view taken along the arrow line B-B' shown in FIG. 2, and FIG. A partially sectional plan view taken along the line of arrow C-C' shown in Fig. 2, Figs. 7, 8, 9 and 10 are partial sectional views showing the locked state of other pilot rings, and Fig. 11 is a partial sectional view of the tapered male thread. A partial cross-sectional side view showing the fitting inspection state, FIG. 12 is the F shown in FIG. 11.
FIG. 13 is a perspective view of the pilot ring. 1...Male thread member (tapered male thread gauge), 3
... Concave groove, 5 ... Tapered male thread, 6 ... Guide member (pilot ring), 7, 8 ... Locking means (stop pin), 31 ... Female thread member (coupling), 3
2...Tapered female thread.
Claims (1)
パおねじを螺刻したおねじ部材とからなるフアス
ナにおいて、いずれか一方のテーパねじ螺刻部に
該テーパねじの山へ接続可能な凹溝を螺刻し、該
凹溝内へ約１巻き分のコイル状に形成した可変形
のパイロツトリングを係止手段により遊嵌したこ
とを特徴とするフアスナ。 ２ 内周面にテーパめねじを螺刻しためねじ部材
と、外周面にテーパおねじを螺刻したおねじ部材
とからなるフアスナにおいて、前記おねじ部材に
螺刻した前記テーパおねじの山へ接続可能な凹溝
を螺刻し、該凹溝内へ、外周面の直径が前記テー
パおねじの山と山とを結ぶ仮想円すい台の円周面
の直径よりも僅かに大きく、内周面の直径が前記
凹溝の底径よりも僅かに大きく、厚さが前記凹溝
の幅よりも僅かに小さく、約１巻き分のコイル状
に形成した可変形のパイロツトリングを係止手段
により遊嵌した特許請求の範囲第１項記載のフア
スナ。 ３ 外周面にテーパおねじを螺刻したおねじ部材
と、内周面にテーパめねじを螺刻しためねじ部材
とからなるフアスナにおいて、前記めねじ部材に
螺刻した前記テーパめねじの山へ接続可能な凹溝
を螺刻し、該凹溝内へ、内周面の直径が前記テー
パめねじの山と山とを結ぶ仮想円すい台の円周面
の直径よりも僅かに小さく、外周面の直径が前記
凹溝の底径よりも僅かに小さく、厚さが前記凹溝
の幅よりも僅かに小さく、約１巻き分のコイル状
に形成した可変形のパイロツトリングを係止手段
により遊嵌した特許請求の範囲第１項記載のフア
スナ。 ４ めねじ部材がカツプリングであり、おねじ部
材がドリルパイプ、輸送パイプ、テーパおねじゲ
ージ等である特許請求の範囲第１項、第２項又は
第３項記載のフアスナ。 ５ おねじ部材がカツプリングであり、めねじ部
材がドリルパイプ、輸送パイプ、テーパめねじゲ
ージ等である特許請求の範囲第１項、第２項又は
第３項記載のフアスナ。 ６ パイロツトリングが金属、プラスチック、ゴ
ム等の弾性材料で構成されている特許請求の範囲
第１項、第２項又は第３項記載のフアスナ。[Scope of Claims] 1. In a fastener consisting of an internally threaded member with a tapered female thread and a male threaded member with a tapered external thread, one of the tapered threads has a ridge on the threaded portion of the tapered thread. A fastener characterized in that a recessed groove connectable to the recessed groove is threaded into the recessed groove, and a variable-shaped pilot ring formed in the shape of a coil with about one turn is loosely fitted into the recessed groove by a locking means. 2. In a fastener consisting of a female threaded member with a tapered female thread cut on the inner circumferential surface and a male threaded member with a tapered male thread cut on the outer circumferential surface, the thread of the tapered male thread cut on the male threaded member A concave groove connectable to the concave groove is screwed into the concave groove, and the diameter of the outer circumferential surface is slightly larger than the diameter of the circumferential surface of the virtual conical pedestal connecting the crests of the tapered external thread, and the inner periphery is threaded into the groove. A variable-shaped pilot ring having a surface diameter slightly larger than the bottom diameter of the groove, a thickness slightly smaller than the width of the groove, and formed into a coil shape of about one turn is attached by the locking means. A loosely fitted fastener according to claim 1. 3. In a fastener consisting of a male threaded member with a tapered male thread carved on the outer peripheral surface and a female threaded member with a tapered female thread carved on the inner peripheral surface, the thread of the tapered female thread carved on the female threaded member A concave groove connectable to the concave groove is screwed into the concave groove, and the diameter of the inner peripheral surface is slightly smaller than the diameter of the circumferential surface of the virtual conical pedestal connecting the crests of the tapered female thread, and the outer periphery is threaded. A variable-shaped pilot ring having a surface diameter slightly smaller than the bottom diameter of the groove, a thickness slightly smaller than the width of the groove, and formed in a coil shape of approximately one turn is attached by the locking means. A loosely fitted fastener according to claim 1. 4. The fastener according to claim 1, 2, or 3, wherein the female thread member is a coupling ring, and the male thread member is a drill pipe, a transport pipe, a tapered male thread gauge, or the like. 5. The fastener according to claim 1, 2, or 3, wherein the male thread member is a coupling ring, and the female thread member is a drill pipe, a transport pipe, a tapered female thread gauge, or the like. 6. The fastener according to claim 1, 2, or 3, wherein the pilot ring is made of an elastic material such as metal, plastic, or rubber.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13545982A JPS5958213A (en) | 1982-08-02 | 1982-08-02 | Fastener |
| EP83902447A EP0115542B1 (en) | 1982-08-02 | 1983-08-01 | Tapered threaded member with guide |
| PCT/JP1983/000248 WO1984000576A1 (en) | 1982-08-02 | 1983-08-01 | Tapered threaded member with guide |
| DE8383902447T DE3371663D1 (en) | 1982-08-02 | 1983-08-01 | Tapered threaded member with guide |
| US06/943,853 US4818167A (en) | 1982-02-18 | 1986-12-22 | Tapered screw member having guide means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13545982A JPS5958213A (en) | 1982-08-02 | 1982-08-02 | Fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5958213A JPS5958213A (en) | 1984-04-03 |
| JPH0379567B2 true JPH0379567B2 (en) | 1991-12-19 |
Family
ID=15152202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13545982A Granted JPS5958213A (en) | 1982-02-18 | 1982-08-02 | Fastener |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5958213A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157190U (en) * | 1983-04-08 | 1984-10-22 | 大同特殊鋼株式会社 | Protector for tapered threaded parts |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4899721A (en) * | 1972-03-31 | 1973-12-17 |
-
1982
- 1982-08-02 JP JP13545982A patent/JPS5958213A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4899721A (en) * | 1972-03-31 | 1973-12-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5958213A (en) | 1984-04-03 |
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