WO2012102401A1 - Female screw structure - Google Patents

Female screw structure Download PDF

Info

Publication number
WO2012102401A1
WO2012102401A1 PCT/JP2012/051896 JP2012051896W WO2012102401A1 WO 2012102401 A1 WO2012102401 A1 WO 2012102401A1 JP 2012051896 W JP2012051896 W JP 2012051896W WO 2012102401 A1 WO2012102401 A1 WO 2012102401A1
Authority
WO
WIPO (PCT)
Prior art keywords
female screw
diameter
spiral groove
convex portion
structure according
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.)
Ceased
Application number
PCT/JP2012/051896
Other languages
French (fr)
Japanese (ja)
Inventor
裕 道脇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nejilaw Inc
Next Innovation GK
Original Assignee
Nejilaw Inc
Next Innovation GK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nejilaw Inc, Next Innovation GK filed Critical Nejilaw Inc
Priority to JP2012554876A priority Critical patent/JPWO2012102401A1/en
Publication of WO2012102401A1 publication Critical patent/WO2012102401A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
    • F16B39/122—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts foreseen with mating surfaces inclined, i.e. not normal, to the bolt axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts

Definitions

  • the present invention relates to a female screw structure that can couple two female screws to each other.
  • Patent Document 1 discloses a screw structure that is devised so as to prevent loosening in terms of mechanical structure and that can completely prevent loosening.
  • ratchet structure portions formed on the respective end faces of the two female screws facing each other are provided so as to protrude or be recessed substantially perpendicularly to the respective end faces.
  • the position of the peak of the ratchet is At most, there was a possibility of deviation by one pitch in the ratchet.
  • the axial positional shift caused by this one-pitch rotational position shift is about 0.028 mm at maximum.
  • the amount of positional deviation in the axial direction also increases proportionally. For example, when the screw pitch is set to 3 mm and the ratchet pitch is set to 120 °, the positional deviation amount in the axial direction is 1 mm at the maximum.
  • the present invention is for overcoming the above-described circumstances, and is a female screw capable of easily obtaining a complete fastening state by easily obtaining a coupled state between a pair of female screws with an appropriate tightening torque.
  • the purpose is to provide a structure.
  • the female screw structure of the present invention includes a first female screw and a second female screw that form a pair, and one end of the first female screw has a convex portion that has a reduced diameter from the base end to the tip end.
  • One end has a concave portion whose diameter is expanded from the bottom to the opening, and at least one of the convex portion and the concave portion has at least one engaging portion, and the other peripheral surface has an engaging portion.
  • One or more engagement receiving parts to which the is engaged are provided.
  • the convex portion and the concave portion are characterized in that at least one of the convex portion and the concave portion is elastically or plastically deformed to be fitted to each other.
  • the contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding thereto are different from each other.
  • the contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding thereto are set in the same manner.
  • the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the tip is different from the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface.
  • the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface is set smaller than the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the proximal end to the distal end.
  • the outer diameter of the base end part of the convex part is set larger than the inner diameter of the opening part of the concave part.
  • the engaging portion is formed in a sawtooth shape.
  • the engagement receiving portion is formed in a sawtooth shape.
  • the set quantity of the engaging portion is equal to the set quantity of the engaging receiving portion.
  • the set quantity of the engaging part is different from the set quantity of the engagement receiving part.
  • the spiral groove of the first female screw and the spiral groove of the second female screw are different from each other.
  • the pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are different from each other.
  • One of the spiral groove of the first female screw and the spiral groove of the second female screw is a right-rotating spiral groove, and the other is a left-rotating spiral groove.
  • the first female screw and the second female screw have different outer diameters.
  • a convex portion provided at one end of the first female screw and having a diameter reduced from the proximal end to the distal end and having an engaging portion on the outer peripheral surface is provided at one end of the second female screw.
  • the first female screw and the second female screw are coupled to each other on the male screw by being fitted in a recess having an engagement receiving portion on the inner circumferential surface thereof. Accordingly, when the first female screw and the second female screw approach each other and the convex portion is inserted deeper into the concave portion, the first female screw and the second female screw are gradually and gradually rotated together with the relative rotation of the first female screw and the second female screw.
  • the engagement portion can be easily engaged with the engagement receiving portion, and in this engagement state between the first female screw and the second female screw.
  • the relative reverse rotation at can be completely prevented.
  • the transition from one engagement position of the engagement portion and the engagement receiving portion to the next-stage engagement position that is further coupled by relative rotation of the first female screw and the second female screw is significantly facilitated. .
  • the pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are particularly different from each other.
  • the engagement portion and the engagement receiver are configured such that rotation is permitted in the relative rotation direction in which the first female screw and the second female screw approach each other, and rotation is prevented against this reverse rotation.
  • the relative reverse rotation between the first female screw and the second female screw can be completely prevented, so It is easy to completely prevent loosening at the required position.
  • one of the spiral groove of the first female screw and the spiral groove of the second female screw is set to the right screw, and the other is set to the left screw, and the first female screw and the second female screw are in a relative rotational direction in which they approach each other.
  • both the engagement portion and the engagement receiving portion are set in a corresponding serrated shape so that rotation is allowed and rotation is prevented against this reverse rotation, Since the relative reverse rotation between the female screw and the second female screw can be completely prevented, it is easy to completely prevent loosening at a required position on the male screw.
  • the retention and removal of the mold in the manufacturing using forging is improved, and mass productivity is improved.
  • FIG. 1 is a side view which shows the state which couple
  • FIG. 1 is a bottom view.
  • FIG. 1 is a top view of the 1st internal thread shown in FIG. 1
  • FIG. 2 is a fragmentary sectional view of a side view. It is a top view of the modification of the 1st internal thread shown in FIG. (A) is a longitudinal cross-sectional view of the 2nd internal thread shown in FIG. 1, (B) is a bottom view.
  • FIG. 3 is a simplified cross-sectional view showing a state in which a convex portion, a second female screw, and a concave portion of the first female screw shown in FIG. 1 are fitted. It is a schematic diagram which shows the state which screwed together the internal thread structure of a present Example to the external thread, and couple
  • the female screw structure of the present invention includes a first female screw and a second female screw that form a pair.
  • the female screw here means a spiral grooved hole formed in the fastened body itself in addition to a fastening member that fastens the fastened body together with a so-called bolt or other male threaded body such as a so-called nut. Etc. are also included.
  • the first female screw has a convex portion having a reduced diameter from the proximal end to the distal end on one end side in the axial direction.
  • the second female screw has a concave portion which is recessed from the end surface on one end side in the axial direction and whose diameter is reduced from the opening surface to the bottom surface. The convex portion and the concave portion are fitted with each other to couple the first female screw and the second female screw to each other.
  • Either one of the convex part and the concave part can be configured to be elastically or plastically deformed and fitted when the convex part is fitted into the concave part, and particularly to be fitted while being elastically deformed. When configured, it becomes easy to obtain a complete locking state.
  • the contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding to this are different from each other. Set as follows.
  • the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the distal end and the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface can also be achieved by setting them differently.
  • This engaging portion is for mechanically preventing relative rotation of the first female screw and the second female screw by engaging with an engagement receiving portion provided on the inner peripheral surface of the recess.
  • this engaging part is not specifically limited, For example, it can form in a sawtooth shape.
  • the relative rotation direction of the first female screw and the second female screw is allowed and the reverse rotation thereof is prevented, and the set quantity of the engaging portion with respect to the engaging receiving portion is equivalent. Then, a large torque is required for forward rotation and reverse rotation, and it is possible to make it stronger, or if this set quantity is different from each other, the engagement pitch can be set finely. However, the torque required for normal rotation and reverse rotation can be made smaller.
  • the engagement receiving portion is for mechanically preventing relative rotation of the first female screw and the second female screw by engaging with an engaging portion provided on the outer peripheral surface of the convex portion.
  • this engagement receiving part is not specifically limited, For example, it can form in a sawtooth shape.
  • the relative rotation direction of the first female screw and the second female screw is allowed and the reverse rotation thereof is prevented, and the set quantity of the engaging portion with respect to the engaging receiving portion is equivalent. Then, a large torque is required for forward rotation and reverse rotation, and it is possible to make it stronger, or if this set quantity is different from each other, the engagement pitch can be set finely. However, the torque required for normal rotation and reverse rotation can be made smaller.
  • the spiral groove of the first female screw can have an appropriate size and configuration.
  • the spiral groove of the first female screw and the spiral groove of the second female screw are preferably set to be different from each other, for example, the pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are set to be different from each other, or Of the spiral groove of the female screw and the spiral groove of the second female screw, it is also possible to set so that one of them forms a clockwise rotating spiral groove and the other forms a counterclockwise rotating spiral groove.
  • one of the spiral groove of the first female screw and the spiral groove of the second female screw is a right-hand thread and the other is a left-hand thread, and the pitches of these right-hand thread and left-hand thread are set to be different from each other. It is also possible to do.
  • the helical groove of the first female screw and the helical groove of the second female screw are set to be different from each other, that is, by setting the screw pitch to be different or the screw direction to be different. This can be completely prevented.
  • the two female screws that are integrally coupled with each other can be prevented. In some cases, it can rotate in the loosening direction, but this can be completely eliminated.
  • the screw pitch is set to be different between the first female screw and the second female screw in the same direction, the female screw body having a relatively fine pitch may be positioned on the tip side of the male screw. desirable.
  • the outer diameters of the first female screw and the second female screw can be set so as to be different from each other while being configured in a nut shape.
  • the outer diameters of these female screws can be set equal, but by using different settings, it is possible to make the fastening work easier when fastening using a fastening tool or the like. It becomes.
  • the female screw structure 1 of the present embodiment is configured to include two female screws, a first female screw 2 and a second female screw 3, which form a pair, and the first screw with a smaller torque on the male screw B.
  • the female screw 2 and the second female screw 3 can be more firmly coupled mechanically to prevent relative rotation of these female screws in one rotation direction. Further, at the required screwing position on the male screw B, a complete loosening prevention state is obtained by preventing the rotation in the loosening direction mechanically.
  • the first female screw 2 and the second female screw 3 of the present embodiment are formed in a so-called hexagonal nut shape having outer portions 2a and 3a each having a substantially regular hexagonal cylindrical shape.
  • the maximum outer diameter of the outer portion 2 a of the female screw 2 is set to be equal to or smaller than the minimum outer diameter of the outer portion 3 a of the second female screw 3.
  • the axial length of the outer portion 2 a of the first female screw 2 is set shorter than the axial length of the outer portion 3 a of the second female screw 3.
  • the setting of dimensions such as the outer diameter and the axial length as described above is arbitrary.
  • the relationship between the outer diameter dimensions is that the outer diameter of the first female screw 2 must be set smaller.
  • the outer diameter of the second female screw 3 can be set to be small, and the axial length of the second female screw 3 can be set to be short.
  • the first female screw 2 has a convex portion 2 b that protrudes from one end portion in the axial direction of the outer shape portion 2 a formed in a substantially regular hexagonal shape.
  • the convex portion 2b is reduced in diameter from the proximal end 2c to the distal end 3d, is formed to be rotationally symmetric about the axis of the first female screw 2, and the inside thereof is a spiral grooved hole penetrating into the outer portion 2a.
  • the screw part 2f which is 2e is continuously extended.
  • the threaded portion 2f does not have to be formed inside the convex portion 2b, and a through hole may be provided so that the male screw B can be inserted. It is preferable that the screw portion is set in series with the screw portion 2f provided in the inside.
  • the thread portion 2f of the first female screw 2 in this embodiment is provided as a left-handed spiral groove, that is, a left-hand thread.
  • the outer peripheral surface of the convex portion 2b is set to an inclination angle ⁇ that is inclined at an appropriate angle with respect to the axial direction and is reduced in diameter from the proximal end 2c to the distal end 2d.
  • On the outer peripheral surface of the convex portion 2b there are eighteen engagement portions 2g formed in a sawtooth shape at an equal pitch. If at least one set number of the engagement portions 2g is provided, For example, as shown in FIG. 3, a total of three engaging portions 2 g may be set one by one in a 120 ° rotationally symmetric portion. Of course, it does not necessarily have to be rotationally symmetric.
  • the tooth direction is set so that rotation is allowed in the direction of counterclockwise rotation and reverse rotation is prevented.
  • the tooth width is set to be wide on the base end 2c side and narrow toward the tip 2d.
  • the shape of the engaging portion 2g is not particularly limited, and for example, it may be formed in a spiral shape like a multi-thread screw.
  • the connection between the female screws can be further enhanced by setting the rotational direction of the spiral to be opposite to the rotational direction of the screw portion 2f.
  • the second female screw 3 has a recess 3 b that is recessed at one end in the axial direction of the outer shape 3 a formed in a substantially regular hexagonal shape.
  • the concave portion 3b expands from the bottom surface 3c to the opening end 3d, is formed rotationally symmetrically about the axis of the second female screw 3, and the inside of the concave portion 3b is a spiral grooved hole 3e penetrating into the outer portion 3a.
  • the male screw B can be inserted therethrough.
  • the screw portion 3f of the second female screw 3 in the present embodiment is provided as a right-handed spiral groove, that is, a right screw.
  • the root diameter, the peak diameter, or the nominal diameter of the thread portions 2f, 3f of the first female screw 2 and the second female screw 3 may be different from each other, but are set to the same diameter in this embodiment. ing.
  • the inner peripheral surface of the recess 3b is set to an inclination angle ⁇ that is inclined at an appropriate angle with respect to the axial direction and expands from the bottom surface 3c to the opening end 3d.
  • the inclination angle ⁇ is particularly inclined. It is set to be smaller than the angle ⁇ .
  • On the inner peripheral surface of the concave portion 3b there are eighteen receiving portions 3g formed in a sawtooth shape corresponding to the serrated engaging portion 2g formed on the outer peripheral surface of the convex portion 2b at an equal pitch. ing.
  • this engagement receiving part 3g should just be provided, it does not specifically limit and it does not necessarily need to be rotationally symmetric.
  • the sawtooth shape of the engagement receiving portion 3g is such that, when the convex portion 2b is fitted, the rotation of the tooth is allowed in the direction of the left rotation and the reverse rotation is prevented due to the relative rotation with the first female screw 2.
  • Direction is set.
  • the tooth width is set to be narrow on the bottom surface 3c side and widen toward the opening end 3d.
  • the shape of the engagement receiving portion 3g is not particularly limited, and for example, it may be formed in a spiral shape like a multi-thread screw.
  • the connectivity between the female screws can be further improved by setting the direction of rotation of the spiral to be opposite to the direction of rotation of the screw portion 3f.
  • the inclination angle ⁇ of the concave portion 3b is smaller than the inclination angle ⁇ of the convex portion 2b, as shown in FIG. Since the convex portion 2b is not fitted into the concave portion 3b unless the tip of 3b abuts the middle of the convex portion 2b in the axial direction and is elastically or plastically deformed. Sometimes, the protrusion 2b is pressed into the recess 3b while deforming the protrusion 2b somewhat.
  • first female screw 2 and the second female screw 3 are respectively screwed into the uniaxial male screw B and located at appropriate positions on the male screw B.
  • the male screw B shown in FIG. In the same area on the part b, both a right-turning spiral groove and a left-turning spiral groove are provided (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Transmission Devices (AREA)

Abstract

A female screw structure (1) in which strong coupling strength can be obtained by easy tightening. As shown in fig. 5, the structure is provided with a first female screw (2) and a second female screw (3), which form a pair. The first female screw (2) has a convex portion (2b) which: is reduced in diameter from the base end (2c) at one extremity to the tip end (2d); has, on the inside thereof, spiral grooves formed continuously with spiral grooves of the first female screw (2); and is provided with an engagement portion (2g) on the outer peripheral surface thereof. The second female screw (3) has a concave portion (3b) which: is reduced in diameter from the opening end (3d) at one extremity to the bottom surface (3c); has, formed on the inside thereof, a through hole which is in communication with a spirally grooved hole (3e) of the second female screw (3); and is provided with an engagement reception portion (3g) on the inner peripheral surface thereof. When the first female screw (2) and the second female screw (3) are screwed together on a male screw (B), the convex portion (2b) and the concave portion (3b) are fitted to each other, and the engagement portion (2g) and the engagement reception portion (3g) are engaged. Thus, the first female screw (2) and the second female screw (3) are coupled so as to prevent relative rotation in at least one direction.

Description

雌ねじ構造Female thread structure

　本発明は、二つの雌ねじ同士を互いに結合させ得る雌ねじ構造に関する。 The present invention relates to a female screw structure that can couple two female screws to each other.

所謂緩み止めと称す類のねじは、多様な物が提案されている。しかしながらそれらは緩みを完全に防止する物ではなく、緩みの進行速度を遅らせることが出来るという物でありいわば緩み難いねじと分類される。この問題に鑑み、機械構造的に緩みを防止するように工夫し、完全な緩み防止を可能としたねじ構造を特許文献１に開示している。 Various types of screws called so-called loosening prevention have been proposed. However, they are not those that completely prevent loosening, but are those that can slow the rate of progress of loosening and are classified as screws that are difficult to loosen. In view of this problem, Patent Document 1 discloses a screw structure that is devised so as to prevent loosening in terms of mechanical structure and that can completely prevent loosening.

特に特許文献１に記載のねじ構造のうち、所謂ラチェット型の雌ねじ構造においては、対を成す二つの雌ねじ同士を、雄ねじ上の所要位置で互いに結合させると完全な結合状態を実現することが可能である。 In particular, in the so-called ratchet-type female screw structure among the screw structures described in Patent Document 1, it is possible to realize a complete coupled state by coupling two female screws forming a pair to each other at a required position on the male screw. It is.

ＰＣＴ／ＪＰ２００９／０５３０９２PCT / JP2009 / 053092

　斯かる特許文献１の図２３，２４等に記載の雌ねじは、互いに対向する両雌ねじのそれぞれの端面に形成されるラチェット構造部分が、それぞれ当該端面に対してほぼ垂直に凸設又は凹設された構造であり、一方のラチェットの谷部に他方のラチェットの山部が入り込む位置と当該雌ねじの締め付け量との関係上、適正な締め付けがなされていないと、当該ラチェットの山部の位置が、最大で、ラチェットにおける一ピッチ分だけずれる可能性があった。 In the female screw described in FIGS. 23, 24, etc. of Patent Document 1, ratchet structure portions formed on the respective end faces of the two female screws facing each other are provided so as to protrude or be recessed substantially perpendicularly to the respective end faces. In terms of the relationship between the position where the peak of the other ratchet enters the valley of the one ratchet and the tightening amount of the female screw, if the proper tightening is not performed, the position of the peak of the ratchet is At most, there was a possibility of deviation by one pitch in the ratchet.

　この一ピッチ分の回転位置ズレによってもたらされる軸方向の位置ズレ量は、ねじピッチを１．０ｍｍ、ラチェットピッチを１０°と仮定すれば、最大で約０．０２８ｍｍであり、ねじの精度や使途によっては公差の範囲内に収まり、或いは締結力による軸方向の弾性変形量に吸収され、実際には位置ズレや軸力変化を来すものではないということになるが、ねじピッチやラチェットピッチが大きくなればその分、軸方向における位置ズレ量も比例的に大きくなる。例えば、ねじピッチを３ｍｍ、ラチェットピッチを１２０°に設定した場合の軸方向における位置ズレ量は、最大で１ｍｍとなる。 Assuming that the screw pitch is 1.0 mm and the ratchet pitch is 10 °, the axial positional shift caused by this one-pitch rotational position shift is about 0.028 mm at maximum. Depending on the condition, it is within the tolerance range or absorbed by the amount of elastic deformation in the axial direction due to the fastening force, and in reality it does not cause misalignment or change in axial force, but the screw pitch or ratchet pitch As the value increases, the amount of positional deviation in the axial direction also increases proportionally. For example, when the screw pitch is set to 3 mm and the ratchet pitch is set to 120 °, the positional deviation amount in the axial direction is 1 mm at the maximum.

ところで、この位置ズレを起こさないように締結するには、完全に締まっている位置からラチェットピッチにおいて、もう一ピッチ分だけ締め付けるようにすればよいが完全締結位置からのもう一ピッチ分の締め付け作業は困難となる。 By the way, in order to fasten it so as not to cause this misalignment, it is only necessary to tighten another pitch from the fully tightened position to the ratchet pitch. Will be difficult.

　本発明は、上述のような事情を解消するためのものであり、対を成す雌ねじ同士の結合状態が適当な締め付けトルクで容易に得られ、完全な締結状態を簡便に得ることが可能な雌ねじ構造を提供することを目的とする。 The present invention is for overcoming the above-described circumstances, and is a female screw capable of easily obtaining a complete fastening state by easily obtaining a coupled state between a pair of female screws with an appropriate tightening torque. The purpose is to provide a structure.

　本発明の雌ねじ構造は、対を成す第一の雌ねじと第二の雌ねじとを備え、第一の雌ねじの一端は、基端から先端にかけて縮径した凸部を有し、第二の雌ねじの一端は、底部から開口部にかけて拡径した凹部を有し、凸部と上記凹部のうち少なくとも一方の周面には、係合部が一つ以上設けられ、他方の周面には係合部が係合される係合受部が一つ以上設けられることを特徴としている。 The female screw structure of the present invention includes a first female screw and a second female screw that form a pair, and one end of the first female screw has a convex portion that has a reduced diameter from the base end to the tip end. One end has a concave portion whose diameter is expanded from the bottom to the opening, and at least one of the convex portion and the concave portion has at least one engaging portion, and the other peripheral surface has an engaging portion. One or more engagement receiving parts to which the is engaged are provided.

　凸部と凹部とは、凸部と凹部のうち少なくとも一方を弾性的又は塑性的に変形させて互いに嵌合させるように構成されることを特徴としている。 The convex portion and the concave portion are characterized in that at least one of the convex portion and the concave portion is elastically or plastically deformed to be fitted to each other.

凸部の縦断面の外形を成す輪郭形状と、これに対応した凹部の縦断面の内形を成す輪郭形状とが互いに異なることを特徴としている。 The contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding thereto are different from each other.

　凸部の縦断面の外形を成す輪郭形状と、これに対応した凹部の縦断面の内形を成す輪郭形状とが同様に設定されることを特徴としている。 The contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding thereto are set in the same manner.

　基端から先端にかけて縮径した凸部の外周面の軸方向に対する傾斜角と、開口面から底面にかけて縮径した凹部の内周面の軸方向に対する傾斜角とが、互いに異なることを特徴としている。 The inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the tip is different from the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface. .

基端から先端にかけて縮径した凸部の外周面の軸方向に対する傾斜角に対し、開口面から底面にかけて縮径した凹部の内周面の軸方向に対する傾斜角が小さく設定されることを特徴としている。 The inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface is set smaller than the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the proximal end to the distal end. Yes.

凸部の基端部の外径が、凹部の開口部の内径よりも大きく設定されることを特徴としている。 The outer diameter of the base end part of the convex part is set larger than the inner diameter of the opening part of the concave part.

係合部は、鋸歯状に形成されることを特徴としている。 The engaging portion is formed in a sawtooth shape.

係合受部は、鋸歯状に形成されることを特徴としている。 The engagement receiving portion is formed in a sawtooth shape.

係合部の設定数量と、係合受部の設定数量とが、同等であることを特徴としている。 The set quantity of the engaging portion is equal to the set quantity of the engaging receiving portion.

係合部の設定数量と、係合受部の設定数量とが、異なることを特徴としている。 The set quantity of the engaging part is different from the set quantity of the engagement receiving part.

第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝とが、互いに異なるものであることを特徴としている。 The spiral groove of the first female screw and the spiral groove of the second female screw are different from each other.

第一の雌ねじの螺旋溝のピッチと第二の雌ねじの螺旋溝のピッチとが、互いに異なることを特徴としている。 The pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are different from each other.

第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝のうち、一方が右回転の螺旋溝を成し、他方が左回転の螺旋溝を成すことを特徴としている。 One of the spiral groove of the first female screw and the spiral groove of the second female screw is a right-rotating spiral groove, and the other is a left-rotating spiral groove.

第一の雌ねじと第二の雌ねじの外径を異なるものに設定することを特徴としている。 The first female screw and the second female screw have different outer diameters.

本発明を適用して成る雌ねじ構造によれば、第一の雌ねじの一端に設けられ基端から先端にかけて縮径しその外周面に係合部を有する凸部が、第二の雌ねじの一端に設けられ開口面から底面にかけて縮径しその内周面に係合受部を有する凹部に嵌合されてこれら第一の雌ねじと第二の雌ねじとが雄ねじ上において互いに結合されるように構成されていることにより、これら第一の雌ねじと第二の雌ねじとが互いに接近してより深く凹部に対して凸部が嵌入する際に、第一の雌ねじと第二の雌ねじの相対回転と共に徐々により強い結合状態にすることが出来、その上、容易に係合部を係合受部に係合させることが可能であって、この係合状態では第一の雌ねじと第二の雌ねじとの間での相対的な逆回転を完全に防止することが出来る。また、係合部と係合受部との一係合位置から第一の雌ねじと第二の雌ねじの相対回転による更なる結合状態となる次段の係合位置への移行が著しく容易となる。 According to the female screw structure to which the present invention is applied, a convex portion provided at one end of the first female screw and having a diameter reduced from the proximal end to the distal end and having an engaging portion on the outer peripheral surface is provided at one end of the second female screw. The first female screw and the second female screw are coupled to each other on the male screw by being fitted in a recess having an engagement receiving portion on the inner circumferential surface thereof. Accordingly, when the first female screw and the second female screw approach each other and the convex portion is inserted deeper into the concave portion, the first female screw and the second female screw are gradually and gradually rotated together with the relative rotation of the first female screw and the second female screw. In addition, the engagement portion can be easily engaged with the engagement receiving portion, and in this engagement state between the first female screw and the second female screw. The relative reverse rotation at can be completely prevented. In addition, the transition from one engagement position of the engagement portion and the engagement receiving portion to the next-stage engagement position that is further coupled by relative rotation of the first female screw and the second female screw is significantly facilitated. .

また、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝とを互いに異なるものとした場合、特に第一の雌ねじの螺旋溝のピッチと第二の雌ねじの螺旋溝のピッチとを互いに異なるものとし且つ第一の雌ねじと第二の雌ねじが互いに接近する相対回転方向に対しては回転が許容され、この逆回転に対しては回転が防止されるように、係合部と係合受部を共に対応する鋸歯状に設定したラチェット構造とした場合には、第一の雌ねじと第二の雌ねじとの間での相対的な逆回転を完全に防止することが出来るので、雄ねじ上の所要位置においては完全に緩みを防止することが容易に出来る。また、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝のうち一方を右ねじに、他方を左ねじに設定し且つ第一の雌ねじと第二の雌ねじが互いに接近する相対回転方向に対しては回転が許容され、この逆回転に対しては回転が防止されるように、係合部と係合受部を共に対応する鋸歯状に設定したラチェット構造とした場合には、第一の雌ねじと第二の雌ねじとの間での相対的な逆回転を完全に防止することが出来るので、雄ねじ上の所要位置においては完全に緩みを防止することが容易に出来る。 When the spiral groove of the first female screw and the spiral groove of the second female screw are different from each other, the pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are particularly different from each other. The engagement portion and the engagement receiver are configured such that rotation is permitted in the relative rotation direction in which the first female screw and the second female screw approach each other, and rotation is prevented against this reverse rotation. In the case of a ratchet structure in which both parts are set in a corresponding sawtooth shape, the relative reverse rotation between the first female screw and the second female screw can be completely prevented, so It is easy to completely prevent loosening at the required position. In addition, one of the spiral groove of the first female screw and the spiral groove of the second female screw is set to the right screw, and the other is set to the left screw, and the first female screw and the second female screw are in a relative rotational direction in which they approach each other. In the case of a ratchet structure in which both the engagement portion and the engagement receiving portion are set in a corresponding serrated shape so that rotation is allowed and rotation is prevented against this reverse rotation, Since the relative reverse rotation between the female screw and the second female screw can be completely prevented, it is easy to completely prevent loosening at a required position on the male screw.

また、凸部を先端に向かって縮径させ、凹部を開口面に向かって拡径させたことにより鍛造を用いた製造においての金型の保ちや抜けが向上し、量産性が向上する。 Further, by reducing the diameter of the convex portion toward the tip and increasing the diameter of the concave portion toward the opening surface, the retention and removal of the mold in the manufacturing using forging is improved, and mass productivity is improved.

（Ａ）は本発明の一実施例の第一の雌ねじと第二の雌ねじとを結合した状態を示す側面図であり、（Ｂ）は底面図である。(A) is a side view which shows the state which couple | bonded the 1st internal thread and the 2nd internal thread of one Example of this invention, (B) is a bottom view. （Ａ）は図１に示す第一の雌ねじの平面図であり、（Ｂ）は側面視の部分断面図である。(A) is a top view of the 1st internal thread shown in FIG. 1, (B) is a fragmentary sectional view of a side view. 図２に示す第一の雌ねじの変形例の平面図である。It is a top view of the modification of the 1st internal thread shown in FIG. （Ａ）は図１に示す第二の雌ねじの縦断面図であり、（Ｂ）は底面図である。(A) is a longitudinal cross-sectional view of the 2nd internal thread shown in FIG. 1, (B) is a bottom view. 図１に示す第一の雌ねじの凸部と第二の雌ねじと凹部とを嵌合している状態を示す簡略断面図である。FIG. 3 is a simplified cross-sectional view showing a state in which a convex portion, a second female screw, and a concave portion of the first female screw shown in FIG. 1 are fitted. 本実施例の雌ねじ構造を雄ねじに螺合し、この雄ねじ上において第一の雌ねじと第二の雌ねじとを結合させている状態を示す模式図である。It is a schematic diagram which shows the state which screwed together the internal thread structure of a present Example to the external thread, and couple | bonded the 1st internal thread and the 2nd internal thread on this external thread.

以下に本発明の雌ねじ構造の実施形態を詳細に説明する。本発明の雌ねじ構造は、対を成す第一の雌ねじと第二の雌ねじとを備える。勿論、ここでいう雌ねじとは、所謂ナットのように被締結体を所謂ボルト等の雄ねじ体との合わせで締結するような締結部材の他、被締結体自体に穿設された螺旋溝付き穴等も含むものである。 Hereinafter, embodiments of the female screw structure of the present invention will be described in detail. The female screw structure of the present invention includes a first female screw and a second female screw that form a pair. Needless to say, the female screw here means a spiral grooved hole formed in the fastened body itself in addition to a fastening member that fastens the fastened body together with a so-called bolt or other male threaded body such as a so-called nut. Etc. are also included.

第一の雌ねじは、その軸方向における一端側に、基端から先端にかけて縮径した凸部を有する。第二の雌ねじは、その軸方向における一端側に、端面から凹設され、その開口面から底面にかけて縮径した凹部を有する。この凸部と凹部は、互いに嵌合して、これら第一の雌ねじと第二の雌ねじとを互いに結合させるためのものである。 The first female screw has a convex portion having a reduced diameter from the proximal end to the distal end on one end side in the axial direction. The second female screw has a concave portion which is recessed from the end surface on one end side in the axial direction and whose diameter is reduced from the opening surface to the bottom surface. The convex portion and the concave portion are fitted with each other to couple the first female screw and the second female screw to each other.

凸部と凹部の何れか一方は、凸部を凹部に嵌合する際に、弾性的又は塑性的に変形させて嵌入させるように構成することが出来、特に弾性変形させながら嵌合するように構成した場合には、完全な緩み止め状態を得るのが容易となる。このように変形を伴う嵌合とするための構成としては、例えば、凸部の縦断面の外形を成す輪郭形状と、これに対応した凹部の縦断面の内形を成す輪郭形状とが互いに異なるように設定する。より具体的には、例えば、基端から先端にかけて縮径した凸部の外周面の軸方向に対する傾斜角と、開口面から底面にかけて縮径した凹部の内周面の軸方向に対する傾斜角とが、互いに異なるように設定することでも達成し得る。この場合、基端から先端にかけて縮径した凸部の外周面の軸方向に対する傾斜角に対し、開口面から底面にかけて縮径した凹部の内周面の軸方向に対する傾斜角を小さく設定することで、凹部に対する凸部の嵌入を徐々に進める際に自ずと凸部に対する凹部による締め付けが増大し次第に弾性変形を伴うようにすることが可能となる。更に、凸部の基端部の外径を、凹部の開口部の内径よりも大きく設定することで、より確実に弾性変形を伴うようにすることが出来る。 Either one of the convex part and the concave part can be configured to be elastically or plastically deformed and fitted when the convex part is fitted into the concave part, and particularly to be fitted while being elastically deformed. When configured, it becomes easy to obtain a complete locking state. As a configuration for fitting with deformation as described above, for example, the contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding to this are different from each other. Set as follows. More specifically, for example, the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the distal end and the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface. It can also be achieved by setting them differently. In this case, by setting the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface relative to the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the distal end, When the convex portion is gradually inserted into the concave portion, the convex portion is naturally tightened by the concave portion and gradually becomes elastically deformed. Furthermore, by setting the outer diameter of the base end portion of the convex portion to be larger than the inner diameter of the opening portion of the concave portion, it is possible to cause elastic deformation more reliably.

凸部の外周面には、適宜数量の係合部が適宜位置に設けられる。この係合部は、凹部の内周面に設けられる係合受部に係合して第一の雌ねじと第二の雌ねじの相対的回転を機械構造的に防止するためのものである。この係合部の形状は特に限定されるものではないが、例えば、鋸歯状に形成することが出来る。この場合、第一の雌ねじと第二の雌ねじの相対的な一回転方向を許容し、その逆回転を防止するように設定するのが好ましく、係合受部に対する係合部の設定数量を同等とすれば、正転や逆転により大きなトルクを必要とするようになり、より強固にすることが可能であって、或いはこの設定数量を互いに異なるものとすれば、係合ピッチを細かく設定しつつも正転や逆転に要するトルクをより小さなものとすることが出来るようになる。 An appropriate number of engaging portions are provided at appropriate positions on the outer peripheral surface of the convex portion. This engaging portion is for mechanically preventing relative rotation of the first female screw and the second female screw by engaging with an engagement receiving portion provided on the inner peripheral surface of the recess. Although the shape of this engaging part is not specifically limited, For example, it can form in a sawtooth shape. In this case, it is preferable that the relative rotation direction of the first female screw and the second female screw is allowed and the reverse rotation thereof is prevented, and the set quantity of the engaging portion with respect to the engaging receiving portion is equivalent. Then, a large torque is required for forward rotation and reverse rotation, and it is possible to make it stronger, or if this set quantity is different from each other, the engagement pitch can be set finely. However, the torque required for normal rotation and reverse rotation can be made smaller.

凹部の内周面には、適宜数量の係合受部が適宜位置に設けられる。この係合受部は、凸部の外周面に設けられる係合部に係合して第一の雌ねじと第二の雌ねじの相対的回転を機械構造的に防止するためのものである。この係合受部の形状は特に限定されるものではないが、例えば、鋸歯状に形成することが出来る。この場合、第一の雌ねじと第二の雌ねじの相対的な一回転方向を許容し、その逆回転を防止するように設定するのが好ましく、係合受部に対する係合部の設定数量を同等とすれば、正転や逆転により大きなトルクを必要とするようになり、より強固にすることが可能であって、或いはこの設定数量を互いに異なるものとすれば、係合ピッチを細かく設定しつつも正転や逆転に要するトルクをより小さなものとすることが出来るようになる。 An appropriate number of engagement receiving portions are provided at appropriate positions on the inner peripheral surface of the recess. The engagement receiving portion is for mechanically preventing relative rotation of the first female screw and the second female screw by engaging with an engaging portion provided on the outer peripheral surface of the convex portion. Although the shape of this engagement receiving part is not specifically limited, For example, it can form in a sawtooth shape. In this case, it is preferable that the relative rotation direction of the first female screw and the second female screw is allowed and the reverse rotation thereof is prevented, and the set quantity of the engaging portion with respect to the engaging receiving portion is equivalent. Then, a large torque is required for forward rotation and reverse rotation, and it is possible to make it stronger, or if this set quantity is different from each other, the engagement pitch can be set finely. However, the torque required for normal rotation and reverse rotation can be made smaller.

　第一の雌ねじの螺旋溝は、適宜の寸法や構成とすることが可能であるが、ねじ締結体として緩み止め効果を得る上では、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝とを、互いに異なるものに設定することが好ましく、例えば、第一の雌ねじの螺旋溝のピッチと第二の雌ねじの螺旋溝のピッチとが互いに異なるように設定することや、或いは、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝のうち、一方が右回転の螺旋溝を成し、他方が左回転の螺旋溝を成すように設定することも可能である。勿論、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝のうち、一方を右ねじとし、他方を左ねじとしつつ、これら右ねじのピッチと左ねじのピッチとを互いに異なるように設定することも可能である。これらのように、第一の雌ねじの螺旋溝と第二の雌ねじの螺旋溝とを互いに異なるように、即ち、ねじピッチが異なることやねじ向きが異なるという設定をすることにより、緩み方向の回転そのものを完全に防止することが出来る。つまり、凸部と凹部との嵌合関係による第一の雌ねじと第二の雌ねじとが離反する方向の相対回転を防止出来たとしても、これだけでは、一体に結合されたこれら二つの雌ねじ同士が、一体的に、緩み方向に回転し得るということがあるが、これを完全に無くすことが可能となるといえる。但し、同方向のねじ向きの第一の雌ねじと第二の雌ねじとにおいて、ねじピッチを異なるものに設定する場合には、雄ねじの先端側に比較上の細かいピッチの雌ねじ体を位置させることが望ましい。 The spiral groove of the first female screw can have an appropriate size and configuration. However, in order to obtain a loosening prevention effect as a screw fastening body, the spiral groove of the first female screw and the spiral groove of the second female screw Are preferably set to be different from each other, for example, the pitch of the spiral groove of the first female screw and the pitch of the spiral groove of the second female screw are set to be different from each other, or Of the spiral groove of the female screw and the spiral groove of the second female screw, it is also possible to set so that one of them forms a clockwise rotating spiral groove and the other forms a counterclockwise rotating spiral groove. Of course, one of the spiral groove of the first female screw and the spiral groove of the second female screw is a right-hand thread and the other is a left-hand thread, and the pitches of these right-hand thread and left-hand thread are set to be different from each other. It is also possible to do. As described above, the helical groove of the first female screw and the helical groove of the second female screw are set to be different from each other, that is, by setting the screw pitch to be different or the screw direction to be different. This can be completely prevented. That is, even if the relative rotation in the direction in which the first female screw and the second female screw are separated from each other due to the fitting relationship between the convex portion and the concave portion can be prevented, the two female screws that are integrally coupled with each other can be prevented. In some cases, it can rotate in the loosening direction, but this can be completely eliminated. However, when the screw pitch is set to be different between the first female screw and the second female screw in the same direction, the female screw body having a relatively fine pitch may be positioned on the tip side of the male screw. desirable.

　また、第一の雌ねじと第二の雌ねじとを、それぞれナット状に構成しつつ、それらの外径を互いに異なるように設定することが出来る。勿論、これらの雌ねじの外径は同等に設定することも可能であるが、異なる設定とすることにより、締結用工具等を使用して締結する際に、締結作業をより容易にすることが可能となる。 Further, the outer diameters of the first female screw and the second female screw can be set so as to be different from each other while being configured in a nut shape. Of course, the outer diameters of these female screws can be set equal, but by using different settings, it is possible to make the fastening work easier when fastening using a fastening tool or the like. It becomes.

　本発明を適用して成る実施例の雌ねじ構造１について添付図面を参照しながら詳細に説明する。本実施例の雌ねじ構造１は、図１に示すように、対を成す第一の雌ねじ２と第二の雌ねじ３の二つの雌ねじを備えて構成され、雄ねじＢ上においてより小さなトルクで第一の雌ねじ２と第二の雌ねじ３とを機械構造的により強固に結合させ得、これらの雌ねじ同士の相対的な一回転方向の回転を防止するためのものである。また、雄ねじＢ上の所要の螺合位置においては、緩み方向の回転を機械構造的に防止しすることで完全な緩み止め状態を得るためのものである。 The female thread structure 1 of the embodiment to which the present invention is applied will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the female screw structure 1 of the present embodiment is configured to include two female screws, a first female screw 2 and a second female screw 3, which form a pair, and the first screw with a smaller torque on the male screw B. The female screw 2 and the second female screw 3 can be more firmly coupled mechanically to prevent relative rotation of these female screws in one rotation direction. Further, at the required screwing position on the male screw B, a complete loosening prevention state is obtained by preventing the rotation in the loosening direction mechanically.

図１に示すように、本実施例の第一の雌ねじ２と第二の雌ねじ３は、それぞれ略正六角筒状を成す外形部２ａ，３ａを有する所謂六角ナット状に形成され、第一の雌ねじ２の外形部２ａの最大外径が第二の雌ねじ３の外形部３ａの最小外径の寸法値以下に設定されている。また、第一の雌ねじ２の外形部２ａの軸方向長は、第二の雌ねじ３の外形部３ａの軸方向長よりも短く設定されている。勿論、これらのような外径や軸方向長等の寸法の設定は任意であり、例えば、外径寸法の大小関係は第一の雌ねじ２の外径を小さめに設定しなければならないというものではなく、第二の雌ねじ３の外径を小さめに設定することも可能であり、第二の雌ねじ３の軸方向長を短めに設定することも可能である。 As shown in FIG. 1, the first female screw 2 and the second female screw 3 of the present embodiment are formed in a so-called hexagonal nut shape having outer portions 2a and 3a each having a substantially regular hexagonal cylindrical shape. The maximum outer diameter of the outer portion 2 a of the female screw 2 is set to be equal to or smaller than the minimum outer diameter of the outer portion 3 a of the second female screw 3. Further, the axial length of the outer portion 2 a of the first female screw 2 is set shorter than the axial length of the outer portion 3 a of the second female screw 3. Of course, the setting of dimensions such as the outer diameter and the axial length as described above is arbitrary. For example, the relationship between the outer diameter dimensions is that the outer diameter of the first female screw 2 must be set smaller. Alternatively, the outer diameter of the second female screw 3 can be set to be small, and the axial length of the second female screw 3 can be set to be short.

図２に示すように、第一の雌ねじ２は、略正六角形状に形成された外形部２ａの軸方向における一端部に凸設された凸部２ｂを有する。この凸部２ｂは、基端２ｃから先端３ｄにかけて縮径し、第一の雌ねじ２の軸を中心として回転対称に形成され、その内部は、外形部２ａの内部に貫穿された螺旋溝付き穴２ｅであるねじ部２ｆが連続的に延設されて構成されている。勿論、この凸部２ｂの内部にはねじ部２ｆが形成されていなければならないというものではなく、雄ねじＢが挿通し得るように貫通穴を有すればよいが、強度向上の観点から外形部２ａの内部に設けられるねじ部２ｆと一連にねじ部が設定されることが好ましい。また、本実施例における第一の雌ねじ２のねじ部２ｆは、左回転の螺旋溝、即ち、左ねじとして設けられている。 As shown in FIG. 2, the first female screw 2 has a convex portion 2 b that protrudes from one end portion in the axial direction of the outer shape portion 2 a formed in a substantially regular hexagonal shape. The convex portion 2b is reduced in diameter from the proximal end 2c to the distal end 3d, is formed to be rotationally symmetric about the axis of the first female screw 2, and the inside thereof is a spiral grooved hole penetrating into the outer portion 2a. The screw part 2f which is 2e is continuously extended. Of course, the threaded portion 2f does not have to be formed inside the convex portion 2b, and a through hole may be provided so that the male screw B can be inserted. It is preferable that the screw portion is set in series with the screw portion 2f provided in the inside. Further, the thread portion 2f of the first female screw 2 in this embodiment is provided as a left-handed spiral groove, that is, a left-hand thread.

凸部２ｂの外周面は、軸方向に対して適宜の角度傾斜した傾斜角αに設定されて基端２ｃから先端２ｄにかけて縮径している。凸部２ｂの外周面には、鋸歯状に形成された係合部２ｇが等ピッチで十八箇所に設けられているが、この係合部２ｇの設定数量は少なくとも一つ設けられていればよく、特に限定されるものではなく、例えば、図３に示すように、１２０°の回転対称部位にそれぞれ一つずつ合計三つの係合部２ｇを設定してもよい。勿論、必ずしも回転対称である必要はない。この係合部２ｇの鋸歯形状は、凹部３ｂに対する嵌入時、左回転の進行方向において回転が許容され、逆回転が防止されるように歯の方向が設定される。歯幅は、基端２ｃ側で広く、先端２ｄに向かって狭まるように設定されている。勿論、係合部２ｇの形状も特に限定されるものではなく、例えば、多条ねじのようにスパイラル状に形成されたものであってもよい。特に、スパイラル状の係合部２ｇとする場合には、スパイラルの回転向きをねじ部２ｆの回転向きに対して逆向きに設定すれば、雌ねじ同士の結合性をより一層高めることが出来る。 The outer peripheral surface of the convex portion 2b is set to an inclination angle α that is inclined at an appropriate angle with respect to the axial direction and is reduced in diameter from the proximal end 2c to the distal end 2d. On the outer peripheral surface of the convex portion 2b, there are eighteen engagement portions 2g formed in a sawtooth shape at an equal pitch. If at least one set number of the engagement portions 2g is provided, For example, as shown in FIG. 3, a total of three engaging portions 2 g may be set one by one in a 120 ° rotationally symmetric portion. Of course, it does not necessarily have to be rotationally symmetric. When the engagement portion 2g is inserted into the recess 3b, the tooth direction is set so that rotation is allowed in the direction of counterclockwise rotation and reverse rotation is prevented. The tooth width is set to be wide on the base end 2c side and narrow toward the tip 2d. Of course, the shape of the engaging portion 2g is not particularly limited, and for example, it may be formed in a spiral shape like a multi-thread screw. In particular, when the spiral engaging portion 2g is used, the connection between the female screws can be further enhanced by setting the rotational direction of the spiral to be opposite to the rotational direction of the screw portion 2f.

図４に示すように、第二の雌ねじ３は、略正六角形状に形成された外形部３ａの軸方向における一端部に凹設された凹部３ｂを有する。この凹部３ｂは、底面３ｃから開口端３ｄにかけて拡径し、第二の雌ねじ３の軸を中心として回転対称に形成され、その内部は、外形部３ａの内部に貫穿された螺旋溝付き穴３ｅに連通して貫通し、雄ねじＢを挿通し得るように構成されている。また、本実施例における第二の雌ねじ３のねじ部３ｆは、右回転の螺旋溝、即ち、右ねじとして設けられている。ここで、これら第一の雌ねじ２と第二の雌ねじ３のねじ部２ｆ，３ｆの谷径や山径或いは呼び径は互いに異なるものであってもよいが本実施例においては同じ径に設定されている。 As shown in FIG. 4, the second female screw 3 has a recess 3 b that is recessed at one end in the axial direction of the outer shape 3 a formed in a substantially regular hexagonal shape. The concave portion 3b expands from the bottom surface 3c to the opening end 3d, is formed rotationally symmetrically about the axis of the second female screw 3, and the inside of the concave portion 3b is a spiral grooved hole 3e penetrating into the outer portion 3a. The male screw B can be inserted therethrough. Further, the screw portion 3f of the second female screw 3 in the present embodiment is provided as a right-handed spiral groove, that is, a right screw. Here, the root diameter, the peak diameter, or the nominal diameter of the thread portions 2f, 3f of the first female screw 2 and the second female screw 3 may be different from each other, but are set to the same diameter in this embodiment. ing.

凹部３ｂの内周面は、軸方向に対して適宜の角度傾斜した傾斜角βに設定されて底面３ｃから開口端３ｄにかけて拡径しているが、本実施例においては特に傾斜角βは傾斜角αよりも小さくなるように設定されている。凹部３ｂの内周面には、凸部２ｂの外周面に形成された鋸歯状の係合部２ｇに対応した鋸歯状に形成された係合受部３ｇが等ピッチで十八箇所に設けられている。ここで、この係合受部３ｇの設定数量は少なくとも一つ設けられていればよく、特に限定されるものではなく、また必ずしも回転対称である必要はない。この係合受部３ｇの鋸歯形状は、凸部２ｂの嵌入時、第一の雌ねじ２との相対回転上、左回転の進行方向において回転が許容され、逆回転が防止されるように歯の方向が設定される。歯幅は、底面３ｃ側で狭く、開口端３ｄに向かって広がるように設定されている。勿論、係合受部３ｇの形状も特に限定されるものではなく、例えば、多条ねじのようにスパイラル状に形成されたものであってもよい。特に、スパイラル状の係合受部３ｇとする場合には、スパイラルの回転向きをねじ部３ｆの回転向きに対して逆向きに設定すれば、雌ねじ同士の結合性をより一層高めることが出来る。 The inner peripheral surface of the recess 3b is set to an inclination angle β that is inclined at an appropriate angle with respect to the axial direction and expands from the bottom surface 3c to the opening end 3d. In this embodiment, the inclination angle β is particularly inclined. It is set to be smaller than the angle α. On the inner peripheral surface of the concave portion 3b, there are eighteen receiving portions 3g formed in a sawtooth shape corresponding to the serrated engaging portion 2g formed on the outer peripheral surface of the convex portion 2b at an equal pitch. ing. Here, at least one set quantity of this engagement receiving part 3g should just be provided, it does not specifically limit and it does not necessarily need to be rotationally symmetric. The sawtooth shape of the engagement receiving portion 3g is such that, when the convex portion 2b is fitted, the rotation of the tooth is allowed in the direction of the left rotation and the reverse rotation is prevented due to the relative rotation with the first female screw 2. Direction is set. The tooth width is set to be narrow on the bottom surface 3c side and widen toward the opening end 3d. Of course, the shape of the engagement receiving portion 3g is not particularly limited, and for example, it may be formed in a spiral shape like a multi-thread screw. In particular, in the case of the spiral engagement receiving portion 3g, the connectivity between the female screws can be further improved by setting the direction of rotation of the spiral to be opposite to the direction of rotation of the screw portion 3f.

以上の説明のように構成される本実施例の雌ねじ構造１にあっては、凸部２ｂの傾斜角αに対して凹部３ｂの傾斜角βが小さいために、図５に示すように、凹部３ｂの先端が凸部２ｂの軸方向における中腹に当接して弾性的又は塑性的な変形を伴わない限り、凹部３ｂに対して凸部２ｂが嵌入し切らないように構成されているので、結合時には幾分か凸部２ｂを変形させながら凹部３ｂ内に圧入することになる。 In the internal thread structure 1 of the present embodiment configured as described above, since the inclination angle β of the concave portion 3b is smaller than the inclination angle α of the convex portion 2b, as shown in FIG. Since the convex portion 2b is not fitted into the concave portion 3b unless the tip of 3b abuts the middle of the convex portion 2b in the axial direction and is elastically or plastically deformed. Sometimes, the protrusion 2b is pressed into the recess 3b while deforming the protrusion 2b somewhat.

従って、凸部２ｂや凹部３ｂを弾性変形させながら嵌合させつつ、係合部２ｇと係合受部３ｇとを係合させた場合には、第一の雌ねじ２と第二の雌ねじ３とは強固な結合力によってこれらの相対的な右回転が完全に防止し得るようになる。 Therefore, when the engaging portion 2g and the engaging receiving portion 3g are engaged while the convex portion 2b and the concave portion 3b are fitted while being elastically deformed, the first female screw 2 and the second female screw 3 These relative clockwise rotations can be completely prevented by the strong binding force.

ここで、これら第一の雌ねじ２と第二の雌ねじ３は、それぞれ一軸を成す雄ねじＢに螺合されて雄ねじＢ上の適宜の位置に在るが、この図６に示す雄ねじＢは、ねじ部ｂ上の同一領域上に、右回転の螺旋溝と左回転の螺旋溝を併有したものである（図示省略）。 Here, the first female screw 2 and the second female screw 3 are respectively screwed into the uniaxial male screw B and located at appropriate positions on the male screw B. The male screw B shown in FIG. In the same area on the part b, both a right-turning spiral groove and a left-turning spiral groove are provided (not shown).

１　雌ねじ構造
２　第一の雌ねじ
２ａ　外形部
２ｂ　凸部
２ｃ　基端
２ｄ　先端
２ｅ　螺旋溝付き穴
２ｆ　ねじ部
２ｇ　係合部
３　第二の雌ねじ
３ａ　外形部
３ｂ　凹部
３ｃ　底面
３ｄ　開口端
３ｅ　螺旋溝付き穴
３ｆ　ねじ部
３ｇ　係合受部
Ｂ　雄ねじ
ｂ　ねじ部 DESCRIPTION OF SYMBOLS 1 Female screw structure 2 1st female screw 2a Outer part 2b Protruding part 2c Base end 2d Tip 2e Spiral grooved hole 2f Screw part 2g Engagement part 2 Second female screw 3a Outer part 3b Recessed part 3c Bottom face 3d Open end 3e With spiral groove Hole 3f Threaded part 3g Engagement receiving part B Male thread b Threaded part

Claims (15)

　対を成す第一の雌ねじと第二の雌ねじとを備え、
上記第一の雌ねじの一端は、基端から先端にかけて縮径した凸部を有し、上記第二の雌ねじの一端は、底部から開口部にかけて拡径した凹部を有し、
上記凸部と上記凹部のうち少なくとも一方の周面には、係合部が一つ以上設けられ、他方の周面には上記係合部が係合される係合受部が一つ以上設けられることを特徴とする雌ねじ構造。 A first female screw and a second female screw forming a pair;
One end of the first female screw has a convex portion reduced in diameter from the base end to the tip, and one end of the second female screw has a concave portion enlarged in diameter from the bottom portion to the opening,
One or more engaging portions are provided on at least one peripheral surface of the convex portion and the concave portion, and one or more engaging receiving portions to which the engaging portion is engaged are provided on the other peripheral surface. An internal thread structure characterized by being made. 　前記凸部と前記凹部とは、前記凸部と前記凹部のうち少なくとも一方を弾性的又は塑性的に変形させて互いに嵌合させるように構成されることを特徴とする請求項１に記載の雌ねじ構造。 2. The female screw according to claim 1, wherein the convex portion and the concave portion are configured to be fitted into each other by elastically or plastically deforming at least one of the convex portion and the concave portion. Construction. 前記凸部の縦断面の外形を成す輪郭形状と、これに対応した前記凹部の縦断面の内形を成す輪郭形状とが互いに異なることを特徴とする請求項１又は２に記載の雌ねじ構造。 3. The female screw structure according to claim 1, wherein a contour shape that forms an outer shape of a vertical section of the convex portion and a contour shape that forms an inner shape of the vertical section of the concave portion corresponding to the contour shape are different from each other. 　前記凸部の縦断面の外形を成す輪郭形状と、これに対応した前記凹部の縦断面の内形を成す輪郭形状とが同様に設定されることを特徴とする請求項１又は２に記載の雌ねじ構造。 The contour shape forming the outer shape of the vertical section of the convex portion and the contour shape forming the inner shape of the vertical section of the concave portion corresponding thereto are set in the same manner. Female thread structure. 　基端から先端にかけて縮径した前記凸部の外周面の軸方向に対する傾斜角と、開口面から底面にかけて縮径した前記凹部の内周面の軸方向に対する傾斜角とが、互いに異なることを特徴とする請求項１乃至４の何れかに記載の雌ねじ構造。 The inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the base end to the distal end is different from the inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface. The internal thread structure according to any one of claims 1 to 4. 基端から先端にかけて縮径した前記凸部の外周面の軸方向に対する傾斜角に対し、開口面から底面にかけて縮径した前記凹部の内周面の軸方向に対する傾斜角が小さく設定されることを特徴とする請求項１乃至５の何れかに記載の雌ねじ構造。 The inclination angle with respect to the axial direction of the inner peripheral surface of the concave portion reduced in diameter from the opening surface to the bottom surface is set smaller than the inclination angle with respect to the axial direction of the outer peripheral surface of the convex portion reduced in diameter from the proximal end to the distal end. The internal thread structure according to any one of claims 1 to 5, wherein 前記凸部の基端部の外径が、前記凹部の開口部の内径よりも大きく設定されることを特徴とする請求項１乃至６の何れかに記載の雌ねじ構造。 The female screw structure according to any one of claims 1 to 6, wherein an outer diameter of a base end portion of the convex portion is set to be larger than an inner diameter of an opening portion of the concave portion. 前記係合部は、鋸歯状に形成されることを特徴とする請求項１乃至７の何れかに記載の雌ねじ構造。 The internal thread structure according to claim 1, wherein the engaging portion is formed in a sawtooth shape. 前記係合受部は、鋸歯状に形成されることを特徴とする請求項１乃至８の何れかに記載の雌ねじ構造。 The internal thread structure according to claim 1, wherein the engagement receiving portion is formed in a sawtooth shape. 前記係合部の設定数量と、前記係合受部の設定数量とが、同等であることを特徴とする請求項１乃至９の何れかに記載の雌ねじ構造。 The female screw structure according to any one of claims 1 to 9, wherein a set quantity of the engaging portion is equal to a set quantity of the engagement receiving portion. 前記係合部の設定数量と、前記係合受部の設定数量とが、異なることを特徴とする請求項１乃至９の何れかに記載の雌ねじ構造。 The female screw structure according to any one of claims 1 to 9, wherein a set quantity of the engaging portion is different from a set quantity of the engagement receiving portion. 前記第一の雌ねじの螺旋溝と前記第二の雌ねじの螺旋溝とが、互いに異なるものであることを特徴とする請求項１乃至１１の何れかに記載の雌ねじ構造。 12. The female screw structure according to claim 1, wherein the spiral groove of the first female screw and the spiral groove of the second female screw are different from each other. 前記第一の雌ねじの前記螺旋溝のピッチと前記第二の雌ねじの前記螺旋溝のピッチとが、互いに異なることを特徴とする請求項１乃至１２の何れかに記載の雌ねじ構造。 The female screw structure according to any one of claims 1 to 12, wherein a pitch of the spiral groove of the first female screw and a pitch of the spiral groove of the second female screw are different from each other. 前記第一の雌ねじの前記螺旋溝と前記第二の雌ねじの前記螺旋溝のうち、一方が右回転の螺旋溝を成し、他方が左回転の螺旋溝を成すことを特徴とする請求項１乃至１３の何れかに記載の雌ねじ構造。 2. The spiral groove of the first female screw and the spiral groove of the second female screw, one of which forms a clockwise spiral groove and the other of which forms a counterclockwise spiral groove. The internal thread structure in any one of thru | or 13. 前記第一の雌ねじと前記第二の雌ねじの外径を異なるものに設定することを特徴とする請求項１乃至１４の何れかに記載の雌ねじ構造。 The female screw structure according to any one of claims 1 to 14, wherein the first female screw and the second female screw have different outer diameters.
PCT/JP2012/051896 2011-01-28 2012-01-29 Female screw structure Ceased WO2012102401A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012554876A JPWO2012102401A1 (en) 2011-01-28 2012-01-29 Female thread structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011016099 2011-01-28
JP2011-016099 2011-01-28

Publications (1)

Publication Number Publication Date
WO2012102401A1 true WO2012102401A1 (en) 2012-08-02

Family

ID=46580964

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/051896 Ceased WO2012102401A1 (en) 2011-01-28 2012-01-29 Female screw structure

Country Status (3)

Country Link
JP (1) JPWO2012102401A1 (en)
TW (1) TWI555919B (en)
WO (1) WO2012102401A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105003518A (en) * 2015-07-15 2015-10-28 蒋昆明 Hub bolt component
JP5866572B1 (en) * 2014-09-16 2016-02-17 有限会社Ｓｇｇ研究所 Installing the wheel nut set
JP2016084929A (en) * 2014-10-27 2016-05-19 好司 岡田 Process for manufacture of fastener
TWI561738B (en) * 2014-08-15 2016-12-11 Kabo Tool Co
JP2017036810A (en) * 2015-08-11 2017-02-16 政晴 堀内 Double nut and manufacturing method thereof
JP2017100102A (en) * 2015-12-04 2017-06-08 株式会社ＮｅｊｉＬａｗ Fastening structure of pressure chamber
CN108071655A (en) * 2016-11-16 2018-05-25 孙愉后 Indicate the fastener of the loose amount of moving back
CN108071653A (en) * 2016-11-16 2018-05-25 孙愉后 Fastener
CN110307232A (en) * 2019-07-03 2019-10-08 王仲文 A kind of screw for preventing from loosening
CN110345147A (en) * 2019-07-16 2019-10-18 航天精工股份有限公司 A kind of effectively anti-loose combination nut
CN113455170A (en) * 2021-08-04 2021-10-01 格力博(江苏)股份有限公司 Quick installation device and lawn mower of mounting disc
JP2021173393A (en) * 2020-04-30 2021-11-01 Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 Screw fastening structure
JP7173263B1 (en) 2021-10-21 2022-11-16 フジテック株式会社 How to remove the nut and how to attach the nut
JP7249065B2 (en) 2017-03-27 2023-03-30 株式会社NejiLaw Relative rotation suppression structure
US12135054B2 (en) 2017-03-27 2024-11-05 NejiLaw inc. Relative rotation prevention structure for screw, relative movement prevention structure, and relative movement prevention body

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757699A (en) * 2018-06-16 2018-11-06 荆门创佳机械科技有限公司 A kind of interlockable stop nut
CN108425934B (en) * 2018-06-21 2021-03-09 荆门市佰思机械科技有限公司 Interlocking anti-loose bolt and nut
CN108799311A (en) * 2018-06-29 2018-11-13 荆门创佳机械科技有限公司 Interlockable automobile tire stop nut
CN110873113B (en) * 2019-12-06 2021-03-16 荆门市佰思机械科技有限公司 Interlocking reusable locknut
JP7116899B1 (en) * 2021-01-30 2022-08-12 株式会社貴匠技研 Combination nut with anti-loosening function

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838840C (en) * 1948-10-02 1952-05-12 Bankhaus Seiler & Co Double nut with a longitudinally slotted conical attachment on one nut and with a conical recess on the other nut that overlaps this conical attachment
JPS6121411A (en) * 1984-07-07 1986-01-30 有吉　一夫 Loosening preventing nut
JPS61126111U (en) * 1985-01-26 1986-08-08
JPS61244912A (en) * 1985-04-22 1986-10-31 ハードロック工業株式会社 Locking device for nut
JPS631810A (en) * 1986-06-20 1988-01-06 岩田ボ−ルト工業株式会社 Double nut
JPH0684017U (en) * 1993-05-07 1994-12-02 清富 林 Hard screw tightening device
JPH116516A (en) * 1997-06-18 1999-01-12 Hard Lock Kogyo Kk Lock nut
WO2009104767A1 (en) * 2008-02-20 2009-08-27 Michiwaki Hiroshi Double-end threaded body and internally-threaded body

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE838840C (en) * 1948-10-02 1952-05-12 Bankhaus Seiler & Co Double nut with a longitudinally slotted conical attachment on one nut and with a conical recess on the other nut that overlaps this conical attachment
JPS6121411A (en) * 1984-07-07 1986-01-30 有吉　一夫 Loosening preventing nut
JPS61126111U (en) * 1985-01-26 1986-08-08
JPS61244912A (en) * 1985-04-22 1986-10-31 ハードロック工業株式会社 Locking device for nut
JPS631810A (en) * 1986-06-20 1988-01-06 岩田ボ−ルト工業株式会社 Double nut
JPH0684017U (en) * 1993-05-07 1994-12-02 清富 林 Hard screw tightening device
JPH116516A (en) * 1997-06-18 1999-01-12 Hard Lock Kogyo Kk Lock nut
WO2009104767A1 (en) * 2008-02-20 2009-08-27 Michiwaki Hiroshi Double-end threaded body and internally-threaded body

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI561738B (en) * 2014-08-15 2016-12-11 Kabo Tool Co
JP5866572B1 (en) * 2014-09-16 2016-02-17 有限会社Ｓｇｇ研究所 Installing the wheel nut set
JP2016084929A (en) * 2014-10-27 2016-05-19 好司 岡田 Process for manufacture of fastener
CN105003518A (en) * 2015-07-15 2015-10-28 蒋昆明 Hub bolt component
JP2017036810A (en) * 2015-08-11 2017-02-16 政晴 堀内 Double nut and manufacturing method thereof
JP2017100102A (en) * 2015-12-04 2017-06-08 株式会社ＮｅｊｉＬａｗ Fastening structure of pressure chamber
CN108071655A (en) * 2016-11-16 2018-05-25 孙愉后 Indicate the fastener of the loose amount of moving back
CN108071653A (en) * 2016-11-16 2018-05-25 孙愉后 Fastener
CN108071653B (en) * 2016-11-16 2025-04-08 孙愉后 Fastening piece
CN108071655B (en) * 2016-11-16 2025-04-04 孙愉后 Fasteners that indicate the amount of loosening
JP7249065B2 (en) 2017-03-27 2023-03-30 株式会社NejiLaw Relative rotation suppression structure
US12135054B2 (en) 2017-03-27 2024-11-05 NejiLaw inc. Relative rotation prevention structure for screw, relative movement prevention structure, and relative movement prevention body
CN110307232A (en) * 2019-07-03 2019-10-08 王仲文 A kind of screw for preventing from loosening
CN110307232B (en) * 2019-07-03 2023-06-16 浙江启冠精工机械股份有限公司 Screw capable of preventing loosening
CN110345147B (en) * 2019-07-16 2021-04-16 航天精工股份有限公司 Effective anti-loosening combined nut
CN110345147A (en) * 2019-07-16 2019-10-18 航天精工股份有限公司 A kind of effectively anti-loose combination nut
JP7448145B2 (en) 2020-04-30 2024-03-12 Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 Screw fastening structure
JP2021173393A (en) * 2020-04-30 2021-11-01 Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 Screw fastening structure
CN113455170A (en) * 2021-08-04 2021-10-01 格力博(江苏)股份有限公司 Quick installation device and lawn mower of mounting disc
CN113455170B (en) * 2021-08-04 2025-11-04 格力博(江苏)股份有限公司 A quick-installation device for a mounting plate and a lawnmower
JP2023062396A (en) * 2021-10-21 2023-05-08 フジテック株式会社 Nut removing method and nut attaching method
JP7173263B1 (en) 2021-10-21 2022-11-16 フジテック株式会社 How to remove the nut and how to attach the nut

Also Published As

Publication number Publication date
TWI555919B (en) 2016-11-01
JPWO2012102401A1 (en) 2014-07-03
TW201239211A (en) 2012-10-01

Similar Documents

Publication Publication Date Title
WO2012102401A1 (en) Female screw structure
US6811364B2 (en) Quick connecting threaded coupler
EP2420354B1 (en) Structure for coupling between a screw head and a tightening tool
CN103083077B (en) For the locked component of Polyaxial bone anchoring device
JP4072832B1 (en) Locking nut
EP1296070B1 (en) Bolt and nut
TWI858156B (en) Thread forming and thread locking fastener
US9121430B2 (en) Wave thread form
CN105960537A (en) Bolt with locking function
JP2012504731A (en) Seizure prevention bolt
JP2013543962A (en) Detent screw
US12060904B2 (en) Threaded fastener having a thread crest greater than its thread root and V angles on the crest and root
US20150091296A1 (en) Retention and anti-roatation for bulkhead fittings
US20130192052A1 (en) Nut for fixing components to a profiled element by screwed means and assembling method
JP4418025B1 (en) Bolt / Nut Fastener
JP2017115907A (en) Fastening mechanism and post-execution anchor with the same
WO2013030970A1 (en) Anti-seizing nut
JP5735905B2 (en) Retaining tool, fastening method and fastening structure
KR20210037238A (en) Bolts with loosening protection
KR102445528B1 (en) How to design a screw body
US20180051737A1 (en) High performance thread rolling and thread locking fastener
RU2745585C1 (en) Threaded element and a connection created on its basis
CN100523527C (en) Threaded fastener
WO2017029705A1 (en) Bolt
JP7448145B2 (en) Screw fastening structure

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12739745

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2012554876

Country of ref document: JP

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 12739745

Country of ref document: EP

Kind code of ref document: A1