WO2016137000A1 - Structure for locking nut tightened on bolt - Google Patents

Structure for locking nut tightened on bolt Download PDF

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Publication number
WO2016137000A1
WO2016137000A1 PCT/JP2016/055959 JP2016055959W WO2016137000A1 WO 2016137000 A1 WO2016137000 A1 WO 2016137000A1 JP 2016055959 W JP2016055959 W JP 2016055959W WO 2016137000 A1 WO2016137000 A1 WO 2016137000A1
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WO
WIPO (PCT)
Prior art keywords
bolt
nut
trapezoidal thin
truncated cone
locking nut
Prior art date
Application number
PCT/JP2016/055959
Other languages
French (fr)
Japanese (ja)
Inventor
良三 太田
Original Assignee
良三 太田
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 良三 太田 filed Critical 良三 太田
Publication of WO2016137000A1 publication Critical patent/WO2016137000A1/en

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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
    • F16B39/22—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
    • 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
    • F16B39/34—Locking by deformable inserts or like parts

Definitions

  • the present invention is a method for preventing loosening of a nut tightened in a coarse screw bolt that requires a strong tightening force.
  • the present invention loosens a trapezoidal thin plate of a tightening nut with a special structure without biting or drilling a coarse screw bolt that requires a strong tightening force in advance, and bites it into the male thread of the bolt with a locking nut. Make sure to prevent the nut from loosening.
  • a truncated cone part 5 is provided at the upper part of the tightening nut 3, and a trapezoidal thin plate 8 is press-fitted into the radial longitudinal grooves 7 at four to six locations of the truncated cone part.
  • the implementation of the present invention makes it possible to reliably prevent loosening of nuts after tightening nuts into coarse screw bolts, and to prevent dropping of nuts such as railway vehicles with severe vibration.
  • FIG. 1 a longitudinal sectional view of a state in which a locking nut is fastened to a tightening nut to a bolt
  • a truncated cone part 5 is provided at the upper part of the tightening nut 3, and four to six radial narrow grooves 7 in the radial direction are provided in the truncated cone part.
  • cured by quenching etc. as shown in FIG. 6 is slightly press-fitted.
  • the thickness of the trapezoidal thin plate is about 1 to 3 mm, the length thereof is the same as the length of the longitudinal groove of the truncated cone part, and the inclination angle of the outer end face 10 is made the same as the inclination of the truncated cone part 5.
  • the inner end face 9 of the two trapezoidal sheets is brought into close contact with the top of the male screw 2 of the bolt, and the outer end face of the two trapezoidal sheets
  • the outer end face 10 of the trapezoidal thin plate is conically shaped as a loosening stop nut by overlapping the tightening nut and screwing the loosening stop nut 11 into the bolt.
  • the inner end surface 9 is pushed by the inner surface of the hole 12 and protrudes to the top of the male screw 2 of the bolt by the dimension that has been protruded, and the rotation of the tightening nut is prevented. It is not necessary to make the food allowance too large After returning the locking nut, there is no risk of failure when returning the tightening nut, and there is no risk of reducing the strength of the bolt.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

An upper member (13) is superposed, through a bolt hole (14), onto the top of a lower member (15) in which a bolt (1) is implanted, a truncated cone section (5) is provided at the upper portion of a fastening nut (3) screwed onto the upper member, vertical division grooves (7) are provided in the radial direction in 4-6 locations in the truncated cone section, and trapezoidal thin plates (8) are somewhat firmly press-fitted into all of the vertical division grooves. The fastening nut is firmly screwed onto the bolt, after which a locking nut (11) is screwed on from above, thereby pressing in the trapezoidal thin plates (8) fitted into the vertical division grooves by means of truncated-cone-shaped holes (12) in the lower portion of the locking nut, and causing the trapezoidal thin plates to bite into the crests of the male thread (2) of the bolt, thus preventing the fastening nut from rotating with respect to the bolt.

Description

ボルトに締め込むナットの緩み止め構造Locking structure for nuts tightened on bolts
　本発明は強い締付け力を必要とする並目ねじボルトに締め込んだナットの緩み止めを行う方法である。 The present invention is a method for preventing loosening of a nut tightened in a coarse screw bolt that requires a strong tightening force.
　緩み止めのためボルトにナットを固定する方法としては、ナットとボルトを貫通する共孔を開けここに割ピンを押込んで固定する方法があるが、この穿孔は現地で行うこともあり面倒であり、又一度ねじ戻しの後、再びナットを締めこむときは合致しない欠点があり、又ころがり軸受を押え込む時に使用するナットは細目ねじであり、大きな荷重には耐えきれず、しかも軸には溝加工を必要とし、又座金の舌の折込み箇所も限られている、そのためこの方法を並目ねじボルトに用いることは不適である、又ねじ面の摩擦力を高めるためのダブルナット式の緩み止めナットもあるが、この効果は不明である。 As a method of fixing the nut to the bolt to prevent loosening, there is a method of opening a common hole that penetrates the nut and bolt, and fixing by pushing the split pin here, but this drilling is sometimes troublesome because it may be done on site In addition, there is a disadvantage that it does not match when the nut is tightened again after unscrewing, and the nut used when pressing the rolling bearing is a fine screw, it can not withstand a heavy load, and the shaft has a groove It requires machining and the number of folds on the tongue of the washer is limited. Therefore, it is unsuitable to use this method for coarse threaded bolts, and it is a double nut type locking device to increase the frictional force of the thread surface. There are nuts, but this effect is unknown.
　本発明は強力な締付け力を必要とする並目ねじのボルトに予め溝加工又は穿孔を施すことなく、特殊な構造の締付ナットの梯形薄板を緩み止ナットによりボルトの雄ねじの山に喰い込ませて、確実にナットの緩み止めを行う。 The present invention loosens a trapezoidal thin plate of a tightening nut with a special structure without biting or drilling a coarse screw bolt that requires a strong tightening force in advance, and bites it into the male thread of the bolt with a locking nut. Make sure to prevent the nut from loosening.
　締付ナット３の上部に円錐台部５を設け、この円錐台部の４~６箇所の半径方向の縦割り溝７に梯形薄板８が圧入され、この締付ナットをねじ込んだ上より緩み止ナット１１を重ねてねじ込むことにより、梯形薄板が緩み止ナットの円錐形穴１２の内周傾斜面によりボルトに向けて押出され、梯形薄板の内側端面９がボルトの雄ねじ２の山頂に食込むことにより、締付ナットの回転を阻止するようにする。 A truncated cone part 5 is provided at the upper part of the tightening nut 3, and a trapezoidal thin plate 8 is press-fitted into the radial longitudinal grooves 7 at four to six locations of the truncated cone part. By screwing the nuts 11 on top of each other, the trapezoidal thin plate is loosened and pushed out toward the bolt by the inner peripheral inclined surface of the conical hole 12 of the locking nut, and the inner end surface 9 of the trapezoidal thin plate bites into the top of the male screw 2 of the bolt. This prevents the tightening nut from rotating.
　本発明の実施により並目ねじボルトにナットを強く締め込んだ後、確実な緩み止めが可能になり、鉄道車両等振動の激しいナットの脱落を防止しうるようになる。 The implementation of the present invention makes it possible to reliably prevent loosening of nuts after tightening nuts into coarse screw bolts, and to prevent dropping of nuts such as railway vehicles with severe vibration.
本発明の実施形態の一例として、ボルトに締付用ナットに緩み止用ナットを締め込んだ状態の縦断面図As an example of an embodiment of the present invention, a longitudinal sectional view of a state in which a locking nut is fastened to a tightening nut to a bolt 図１の平面図Plan view of FIG. 図１の側面図Side view of FIG. 図１、図２及び図３に組込まれている楔形小片の正面図Front view of the wedge-shaped piece incorporated in FIGS. 1, 2 and 3 図４の平面図Plan view of FIG. 図４の側面図Side view of FIG.
　締付ナット３の上部には円錐台部５を設け、その円錐台部には４~６箇所の半径方向の細幅の縦割り溝７を設ける、そしてこの縦割溝に図４、図５及び図６に示したような焼入れ等により硬化した梯形薄板８がやや強く圧入される。梯形薄板の厚さは１~３ｍｍ程度とし、その長さは円錐台部の縦割り溝の長さと同一とし、又外側端面１０の傾斜角度を円錐台部５の傾斜と同一としておき、この２個の梯形薄板を円錐台部の相向う２ケ所の縦割り溝に差し込んだとき、その両梯形薄板の内側端面９をボルトの雄ねじ２の山頂に密接させ、そして、その両梯形薄板の外側端面１０を円錐台部の外周面より僅かに突出させておくことにより、締付ナットに重ねて緩み止ナット１１をボルトにねじ込んでいくことにより、梯形薄板の外側端面１０は緩み止ナットの円錐形穴１２の内面に押されて、先程、突出させておいた寸法だけ内側端面９はボルトの雄ねじ２の山頂に食込むことになって、締付ナットの回転が阻止されるようになる、この食込み代はあまり大きくする必要がなく、緩み止ナットを戻した後、締付ナットを戻すときの障害の恐れはない、又ボルトの強度を低下させる恐れはない。 A truncated cone part 5 is provided at the upper part of the tightening nut 3, and four to six radial narrow grooves 7 in the radial direction are provided in the truncated cone part. And the trapezoidal thin plate 8 hardened | cured by quenching etc. as shown in FIG. 6 is slightly press-fitted. The thickness of the trapezoidal thin plate is about 1 to 3 mm, the length thereof is the same as the length of the longitudinal groove of the truncated cone part, and the inclination angle of the outer end face 10 is made the same as the inclination of the truncated cone part 5. When the two trapezoidal sheets are inserted into the two vertical grooves facing each other in the truncated cone part, the inner end face 9 of the two trapezoidal sheets is brought into close contact with the top of the male screw 2 of the bolt, and the outer end face of the two trapezoidal sheets By slightly projecting 10 from the outer peripheral surface of the truncated cone portion, the outer end face 10 of the trapezoidal thin plate is conically shaped as a loosening stop nut by overlapping the tightening nut and screwing the loosening stop nut 11 into the bolt. The inner end surface 9 is pushed by the inner surface of the hole 12 and protrudes to the top of the male screw 2 of the bolt by the dimension that has been protruded, and the rotation of the tightening nut is prevented. It is not necessary to make the food allowance too large After returning the locking nut, there is no risk of failure when returning the tightening nut, and there is no risk of reducing the strength of the bolt.
　１・・・ボルト
　２・・・ボルトの雄ねじ
　３・・・締付ナット
４・・・締付ナットの雌ねじ
　５・・・締付ナットの円錐台部
６・・・円錐台部の円周溝
　７・・・円錐台部の縦割り溝
８・・・梯形薄板
　９・・・梯形薄板の内側端面
１０・・・梯形薄板の外側端面
１１・・・緩み止ナット
１２・・・緩み止ナットの円錐形穴
１３・・・上部材
１４・・・上部材のボルト孔
１５・・・下部材 DESCRIPTION OF SYMBOLS 1 ... Bolt 2 ... Male screw of bolt 3 ... Tightening nut 4 ... Female screw of tightening nut 5 ... Frustum part 6 of a fastening nut 6 ... Circumferential groove of a frustum part 7: Vertical groove 8 of the truncated cone part 8: Trapezoidal thin plate 9 ... Inner end surface 10 of the trapezoidal thin plate ... Outer end surface 11 of the trapezoidal thin plate ... Loosening stop nut 12 ... Conical hole 13 ... upper member 14 ... bolt hole 15 in upper member ... lower member

Claims (1)

  1. ボルトに締め込むナットの緩み止めの構造において、締付ナット（３）の上部に円錐台部（５）を設け、この円錐台部の４~６箇所の半径方向の縦割り溝（７）に梯形薄板（８）が圧入され、この締付ナットをねじ込んだ上より緩み止ナット（１１）を重ねてねじ込むことにより、梯形薄板が緩み止ナットの円錐形穴（１２）の内周傾斜面によりボルトに向けて押出され、梯形薄板の内側端面（９）がボルトの雄ねじ（２）の山頂に食込むことにより、締付ナットの回転を阻止するナットの緩み止めの構造。 In the structure for preventing the loosening of the nut to be tightened into the bolt, a truncated cone part (5) is provided on the upper part of the tightening nut (3), and four to six radial slits (7) in the radial direction of the truncated cone part are provided. The trapezoidal thin plate (8) is press-fitted, and the locking nut (11) is overlapped and screwed in after the tightening nut is screwed in, so that the trapezoidal thin plate is loosened by the inner peripheral inclined surface of the conical hole (12) of the locking nut. A structure for preventing the nut from loosening, which is pushed toward the bolt and prevents the rotation of the tightening nut by the inner end face (9) of the trapezoidal thin plate biting into the top of the male screw (2) of the bolt.
PCT/JP2016/055959 2015-02-25 2016-02-18 Structure for locking nut tightened on bolt WO2016137000A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-051390 2015-02-25
JP2015051390A JP5835701B1 (en) 2015-02-25 2015-02-25 Locking structure for nuts tightened on bolts

Publications (1)

Publication Number Publication Date
WO2016137000A1 true WO2016137000A1 (en) 2016-09-01

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WO (1) WO2016137000A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853034A (en) * 2020-07-15 2020-10-30 嘉兴旭阳五金科技股份有限公司 Nut for wind power generation with long service life

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113586590B (en) * 2021-08-02 2023-04-25 航天精工股份有限公司 High-locking crack-preventing mandrel and closing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107716A (en) * 2005-09-14 2007-04-26 Koyo Kizai Kk Locking nut
JP2008038947A (en) * 2006-08-02 2008-02-21 Katsuhiro Ouchi Locking mechanism for screw
JP2011038549A (en) * 2009-08-07 2011-02-24 Yarisute:Kk Fastener with mechanism for preventing looseness of screw
JP2013185704A (en) * 2012-03-05 2013-09-19 Tanaka Masae Lock nut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107716A (en) * 2005-09-14 2007-04-26 Koyo Kizai Kk Locking nut
JP2008038947A (en) * 2006-08-02 2008-02-21 Katsuhiro Ouchi Locking mechanism for screw
JP2011038549A (en) * 2009-08-07 2011-02-24 Yarisute:Kk Fastener with mechanism for preventing looseness of screw
JP2013185704A (en) * 2012-03-05 2013-09-19 Tanaka Masae Lock nut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853034A (en) * 2020-07-15 2020-10-30 嘉兴旭阳五金科技股份有限公司 Nut for wind power generation with long service life
CN111853034B (en) * 2020-07-15 2021-10-08 嘉兴旭阳五金科技股份有限公司 Nut for wind power generation with long service life

Also Published As

Publication number Publication date
JP5835701B1 (en) 2015-12-24
JP2016156488A (en) 2016-09-01

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