JP2020091019A - Bolts that will not loosen - Google Patents

Bolts that will not loosen Download PDF

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JP2020091019A
JP2020091019A JP2018229875A JP2018229875A JP2020091019A JP 2020091019 A JP2020091019 A JP 2020091019A JP 2018229875 A JP2018229875 A JP 2018229875A JP 2018229875 A JP2018229875 A JP 2018229875A JP 2020091019 A JP2020091019 A JP 2020091019A
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bolt
small
diameter
thread
lock
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JP6640967B1 (en
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利光 徳元
Toshimitsu Tokumoto
利光 徳元
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    • 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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

To provide a bolt loosening prevention method capable of performing tightening work easily and quickly, and also capable of obtaining a strong and reliable loosening prevention effect.SOLUTION: There are provided a first bolt 11 having a bolt head formed by cutting the shaft of a single bolt in the middle into two at a right angle to the shaft, and a second bolt 12 having a screw tip. An eccentric cylindrical portion 123 having a diameter smaller than the shaft diameter of the second bolt 12 projects from the second bolt 12 outward in the axial direction, eccentric in a direction perpendicular to the central axis of the second bolt 12 at a cutting surface 122 with the first bolt 11. At the same time, a male screw is formed on a small-diameter screw portion 124 on the outer circumference of the eccentric cylindrical portion 123. On the other hand, the first bolt 11 is provided with a small-diameter screw hole 114, which is screwed with the small-diameter screw portion 124, on a cut surface 112 with the second bolt 12 so as to be eccentric in a direction orthogonal to the central axis of the first bolt 11. A female screw is formed in the inside, and the whole is a lock bolt 1.SELECTED DRAWING: Figure 1

Description

本発明は、緩まないボルトに関する。詳しくは、押さえボルトに用いられる緩み止めのついたボルトに関する。 The present invention relates to a bolt that does not loosen. Specifically, the present invention relates to a bolt with a lock used for a holding bolt.

押さえボルトにおいて振動や衝撃が加わると、瞬間的にボルトと締め付け面との間に隙間ができて、ボルトに荷重が働かなくなり、それに伴ってボルトに回転が生じて緩みが発生することが知られている。このようなボルトの緩みを防止するために、ボルトを２本使用し、各ボルトの頭同士をワイヤで連結して一方のボルトが緩む方向にワイヤーを引くと他方のボルトが締まる方向に引くようにワイヤーを掛けるロックワイヤー方式が従来から知られている。 It is known that when vibration or shock is applied to the holding bolt, a gap is momentarily created between the bolt and the tightening surface, the load does not work on the bolt, and the bolt rotates accordingly and loosens. ing. To prevent such loosening of bolts, use two bolts, connect the heads of each bolt with a wire, and pull the wire in the direction in which one bolt loosens so that the other bolt pulls in the tightening direction. A lock wire system for hanging a wire on a wire is conventionally known.

しかしながら、上記従来のロックワイヤー方式では、ボルトが２本とボルト穴２個が必要な上、２本のボルトの頭にワイヤーを掛ける作業が必要になるため作業性が悪い問題があった。 However, the above-mentioned conventional lock wire system has a problem in that workability is poor because two bolts and two bolt holes are required and it is necessary to hang wires on the heads of the two bolts.

本発明は、従来のワイヤーによるボルトのロック方式の課題を解決するものであり、１本のような状態のボルトと１個のボルト穴で、ボルトをロックする作業が簡単かつ迅速に行え、しかも、確実かつ強固な緩み止め効果が得られるボルトのロック方式を提供する。 The present invention solves the problem of the conventional bolt locking method using a wire, and the work of locking the bolt can be easily and quickly performed with one bolt and one bolt hole. Provide a locking system for bolts that provides a reliable and strong anti-loosening effect.

上記課題を解決するために、本発明のロックボルトは、一本のボルトの軸を途中から軸と直角に二つに切断した形でボルトの頭を有する第一ボルトとねじ先を有する第二ボルトとからなるロックボルトであって、第一ボルトと第二ボルトは、一つのボルト穴に螺合する雄ねじを外周にそれぞれ有しており、
第二ボルトには第一ボルトとの切断面側に第二ボルトの直径より小径の偏心円柱部が第二ボルトの中心軸に対して直角方向に偏心されて軸方向外方に突設されていると共に、偏心円柱部の外周には雄ねじが形成されている一方、
第一ボルトには、第二ボルトとの切断面側に、前記小径ねじ部と螺合する、小径ねじ穴が第一ボルトの中心軸に対して直角方向に偏心して開けられていて内部に雌ねじが形成されており、
第二ボルトの小径ねじ部を第一ボルトの小径ねじ穴に、相対向する切断面が接した状態で螺合させると、両者の外周ねじ部の中心軸及びピッチが一致するように構成し、
さらに第二ボルトには回転操作用の凹みが設けられている。 In order to solve the above-mentioned problems, the lock bolt of the present invention comprises a first bolt having a bolt head in a form in which a shaft of one bolt is cut into two at a right angle to the shaft and a second bolt having a screw tip. A lock bolt consisting of a bolt, wherein the first bolt and the second bolt each have a male screw to be screwed into one bolt hole on the outer periphery,
An eccentric cylinder part having a diameter smaller than the diameter of the second bolt is eccentric to the second bolt on the cutting surface side of the first bolt in a direction perpendicular to the central axis of the second bolt and is projected outward in the axial direction. While an external thread is formed on the outer circumference of the eccentric cylinder part,
The first bolt has a small-diameter screw hole that is screwed with the small-diameter screw portion on the side of the cut surface with the second bolt, and is eccentrically formed in the direction orthogonal to the central axis of the first bolt. Has been formed,
When the small-diameter screw portion of the second bolt is screwed into the small-diameter screw hole of the first bolt in a state where the facing cutting surfaces are in contact with each other, the central axes and pitches of the outer peripheral screw portions of both are configured to match,
Further, the second bolt is provided with a recess for rotating operation.

このロックボルトの使用方法について説明すると、常時は、第二ボルトの小径ねじ部が第一ボルトの小径ねじ穴に、相対向する切断面が接した状態で螺合され、かつ両者の外周ねじ部の中心軸及びピッチが一致する状態にセットされて一本のボルトのような状態になっており、緩まない押さえボルトとして使用する時は、そのセット状態のまま第一ボルトと第二ボルトをボルト穴にロックボルトに所定のトルクが作用するまで締め付け方向に回転させた後、この回転方向と同一方向に、第二ボルトに設けられた回転操作用の凹みに外部から回転工具を嵌め込み第二ボルトのみ所定角度回転させる。これにより、径方向のずれによるロック作用により緩み止めされるのである。 Explaining how to use this lock bolt, the small-diameter threaded portion of the second bolt is always screwed into the small-diameter threaded hole of the first bolt with the facing cut surfaces in contact, and the outer peripheral threaded portion of both The center axis and the pitch of the are set so that they are like a single bolt, and when used as a holding bolt that does not loosen, the first bolt and the second bolt should be bolted in that set state. After rotating the lock bolt in the tightening direction until a predetermined torque is applied to the hole, in the same direction as this rotation direction, insert a rotary tool from the outside into the rotary operation recess provided in the second bolt, and then insert the second bolt. Only rotate it by a certain angle. As a result, it is prevented from loosening due to the locking action due to the displacement in the radial direction.

このロックボルトは、第一ボルトと第二ボルトを組み合わせた１本のボルトのような状態で締め付け方向に回転させた後、この回転方向と同一方向に、第二ボルトのみ所定角度回転させるという比較的簡単で迅速に行える動作によって、確実かつ強固な緩み止め効果が得られるという優れた特徴を有する。 This lock bolt is rotated in the tightening direction like a single bolt that is a combination of the first bolt and the second bolt, and then only the second bolt is rotated by a predetermined angle in the same direction as this rotation direction. It has an excellent feature that a reliable and strong anti-loosening effect can be obtained by a simple and quick operation.

本発明により、第一ボルトと第二ボルトを組み合わせた１本のような状態のボルトでボルトの締め付け作業が比較的簡単かつ迅速に行え、しかも、確実かつ強固な緩み止め効果が得られるロックボルトを提供することができる。 According to the present invention, a bolt in which the first bolt and the second bolt are combined together and the bolt can be tightened relatively easily and quickly, and a reliable and strong locking effect can be obtained. Can be provided.

第一ボルトに貫通する穴があり、第二ボルトの小径ねじ部上部に回転操作用の凹みを持つロックボルトの断面図である。It is a sectional view of a lock bolt which has a hole which penetrates a 1st bolt, and has a dent for rotation operation in the small diameter screw part upper part of a 2nd bolt. 図１のロックボルトの側面図である。It is a side view of the lock bolt of FIG. 図１のロックボルトの平面図である。It is a top view of the lock bolt of FIG. 図１のロックボルトの第一ボルトと第二ボルトを組み合わせた状態の断面図である。It is sectional drawing of the state which combined the 1st bolt and 2nd bolt of the lock bolt of FIG. 図１のロックボルトの第一ボルトと第二ボルトを組み合わせた状態の側面図である。It is a side view of the state which combined the 1st bolt and the 2nd bolt of the lock bolt of FIG. 図１のロックボルトにおいて第一ボルトと第二ボルトを組み合わせた状態で締め付け方向に回転させる様子を示す断面図である。It is sectional drawing which shows a mode that a lock bolt of FIG. 1 rotates in a tightening direction in the state which combined the 1st bolt and the 2nd bolt. 図１のロックボルトにおいて、図６の状態から第二ボルトのみを第一ボルトに対し所定角度回転させる様子を示す断面図である。FIG. 7 is a cross-sectional view showing how the lock bolt of FIG. 1 rotates only the second bolt with respect to the first bolt by a predetermined angle from the state of FIG. 6. 第二ボルトのねじ先側に回転操作できるような凹みを設けたロックボルトの断面図である。It is sectional drawing of the lock bolt which provided the recess which can be rotated on the screw tip side of a 2nd bolt. 図８のロックボルトにおいて、第一ボルトと第二ボルトを組み合わせた状態で締め付け方向に回転させた後、第二ボルのみを第一ボルトに対し所定角度回転させる様子を示す断面図である。FIG. 9 is a cross-sectional view showing a state in which, in the lock bolt of FIG. 8, the first bolt and the second bolt are combined and rotated in the tightening direction, and then only the second bolt is rotated by a predetermined angle with respect to the first bolt. 図１のロックボルトにおいて、第二ボルトの回転操作用の凹みと一体化した棒が設けられたロックボルトの断面図である。FIG. 2 is a cross-sectional view of the lock bolt of FIG. 1 provided with a rod integrated with a recess for rotating a second bolt. 図１０のロックボルトの側面図である。It is a side view of the lock bolt of FIG. 図１のロックボルトにおいて、第一ボルトの外周ねじと第二ボルトの外周ねじとがテーパねじからなるロックボルトの断面図である。FIG. 2 is a cross-sectional view of the lock bolt of FIG. 1 in which the outer peripheral thread of the first bolt and the outer peripheral thread of the second bolt are taper threads. 第一ボルトに小径ねじ部が、第二ボルトに小径ねじ穴が設けられ、第二ボルトの小径ねじ穴の底に回転操作用の凹みが設けられたロックボルトの断面図である。FIG. 6 is a cross-sectional view of a lock bolt in which a small-diameter screw portion is provided in the first bolt, a small-diameter screw hole is provided in the second bolt, and a recess for rotation operation is provided in the bottom of the small-diameter screw hole of the second bolt. 図１のロックボルトにおいて、回転ストッパーを付けたロックボルトの断面図である。It is sectional drawing of the lock bolt which added the rotation stopper in the lock bolt of FIG.

図を用いてロックボルトの実施形態を例示説明する。
以下の実施形態はあくまで本発明を掲示説明するものであって、本発明は、以下の具体的な実施形態に限定されるものではない。 An embodiment of a lock bolt will be described as an example with reference to the drawings.
The following embodiments merely post and describe the present invention, and the present invention is not limited to the following specific embodiments.

ロックボルト１は、第一ボルト１１と第二ボルト１２からなる。 The lock bolt 1 includes a first bolt 11 and a second bolt 12.

１．第一ボルト１１
第一ボルト１１は、外周にボルト穴１３に螺合するねじである外周ねじ部１１１を有する。本実施形態では、第一ボルト１１は、側面視において、ボルトの頭が付いた外周に雄ねじの外周ねじ部１１１が付いたボルトである。 1. First bolt 11
The first bolt 11 has an outer peripheral threaded portion 111 that is a screw that is screwed into the bolt hole 13 on the outer periphery. In the present embodiment, the first bolt 11 is a bolt having an outer peripheral threaded portion 111 of a male screw on the outer periphery having a head of the bolt in a side view.

そして、第一ボルト１１には、第二ボルト１２との切断面１１２に小径ねじ穴１１４が形成されている。 The first bolt 11 has a small-diameter screw hole 114 formed in a cut surface 112 with the second bolt 12.

小径ねじ穴１１４は、第一ボルト１１の直径より小さい。また、小径ねじ穴１１４は、第一ボルト１１の中心軸に対して直角方向に偏心されて形成されている。 The small diameter screw hole 114 is smaller than the diameter of the first bolt 11. The small-diameter screw hole 114 is formed so as to be eccentric in the direction perpendicular to the central axis of the first bolt 11.

さらに、第一ボルト１１には、第一ボルト１１の中心軸と平行な方向に第一ボルト１１を貫通して小径ねじ穴１１４に達する回転操作用の穴１１５が開けられている。 Further, the first bolt 11 is provided with a hole 115 for rotating operation which penetrates the first bolt 11 and reaches the small diameter screw hole 114 in a direction parallel to the central axis of the first bolt 11.

２．第二ボルト１２
第二ボルト１２も、外周にボルト穴１３に螺合するねじである外周ねじ部１２１を有する。外周ねじ部１２１は、第一ボルト１１の外周ねじ部１１１と連続するため外周ねじ部１１１と同一方向および同一ピッチである。
本実施形態では、第二ボルト１２も、側面視において、外周に外周ねじ部１２１を有する円柱状形状であり、側面視において、ボルトの頭の無いボルトの外形形状である。 2. Second bolt 12
The second bolt 12 also has an outer peripheral threaded portion 121 that is a screw that is screwed into the bolt hole 13 on the outer periphery. Since the outer peripheral threaded portion 121 is continuous with the outer peripheral threaded portion 111 of the first bolt 11, it has the same direction and the same pitch as the outer peripheral threaded portion 111.
In the present embodiment, the second bolt 12 also has a columnar shape having an outer peripheral threaded portion 121 on the outer periphery in a side view, and has an outer shape of the bolt without a head of the bolt in a side view.

そして、第二ボルト１２には、第一ボルト１１との切断面１２２に偏心円柱部１２３が突設されている。この偏心円柱部１２３は、ボルト１２の直径よりも小径である。また、偏心円柱部１２３は、ボルト１２の中心軸に対し直角方向に偏心されて突設されている。ボルト１２の中心軸に対する偏心円柱部１２３の偏心寸法は、第一ボルト１１における、第一ボルト１１の中心軸に対する小径ねじ穴１１４の偏心寸法と等しい。 The second bolt 12 is provided with an eccentric cylindrical portion 123 on a cut surface 122 with the first bolt 11 so as to project. The eccentric cylindrical portion 123 has a diameter smaller than that of the bolt 12. Further, the eccentric cylindrical portion 123 is provided so as to be eccentric in a direction perpendicular to the central axis of the bolt 12 so as to project. The eccentric dimension of the eccentric cylindrical portion 123 with respect to the central axis of the bolt 12 is equal to the eccentric dimension of the small diameter screw hole 114 with respect to the central axis of the first bolt 11 in the first bolt 11.

また、偏心円柱部１２３の外周には、小径ねじ部１２４が形成されている。 A small-diameter threaded portion 124 is formed on the outer circumference of the eccentric cylindrical portion 123.

加えて、図４に例示するように、第二ボルト１２の小径ねじ部１２４を第一ボルト１１の小径ねじ穴１１４に、第一ボルト１１と第二ボルト１２の相対向する切断面１１２と切断面１２２が接した状態に螺合させると、図４および図５に例示するように、第一ボルト１１と第二ボルト１２とが平面視で一致するように構成されている。 In addition, as illustrated in FIG. 4, the small-diameter threaded portion 124 of the second bolt 12 is cut into the small-diameter threaded hole 114 of the first bolt 11 and the cut surfaces 112 of the first bolt 11 and the second bolt 12 which face each other. When the surfaces 122 are screwed into contact with each other, the first bolt 11 and the second bolt 12 are configured so as to coincide with each other in a plan view, as illustrated in FIGS. 4 and 5.

そして、図４に例示するように、偏心円柱部１２３の上面には、回転操作用の凹み１２５が形成されていて第一ボルト１１を貫通する回転操作用の穴１１５の真下にくるように形成されている。 Then, as illustrated in FIG. 4, the eccentric cylindrical portion 123 has a recess 125 for rotational operation formed on the upper surface thereof so as to be directly below the hole 115 for rotational operation that penetrates the first bolt 11. Has been done.

３．ロックボルト１の使用方法
３．１常時（締結前の状態）
ロックボルト１による締結に先だって、第一ボルト１１と第二ボルト１２を組み合わせてセット状態とする。具体的には、第一ボルト１１の小径ねじ穴１１４に第２ボルト１２の小径ねじ部１２３を、相対向する切断面１１２と切断面１２２が接した状態で螺合する。 3. How to use the lock bolt 3.1 Always (state before fastening)
Prior to fastening with the lock bolt 1, the first bolt 11 and the second bolt 12 are combined into a set state. Specifically, the small-diameter threaded portion 114 of the second bolt 12 is screwed into the small-diameter threaded hole 114 of the first bolt 11 with the cut surfaces 112 and 122 facing each other.

この状態では、第一ボルト１１と第二ボルト１２とが平面視で一致すると同時に両者の外周ねじ部１１１と外周ねじ部１２１の中心軸及びピッチが一致する。そのため、第一ボルト１１と第二ボルト１２をあたかも一つのボルトのようにボルト穴１３に螺合させることができる。 In this state, the first bolt 11 and the second bolt 12 coincide with each other in a plan view, and at the same time, the central axes and the pitches of the outer peripheral threaded portion 111 and the outer peripheral threaded portion 121 of both of them coincide. Therefore, the first bolt 11 and the second bolt 12 can be screwed into the bolt holes 13 as if they were one bolt.

３．２締結時
そして、ロックボルト１による締結時には、まず、セット状態の第一ボルト１１と第二ボルト１２を、ボルト穴１３に螺合し、所定のトルクが作用するまで締め付け方向に回転させる。
このとき、図６に示すように、ボルト穴１３に対して第一ボルト１１のボルトの頭１１０に力を加えてボルト穴１３に所定のトルクが作用するまで締め付け方向に回転させることができる。 3.2 At the time of tightening Then, at the time of tightening with the lock bolt 1, first, the first bolt 11 and the second bolt 12 in the set state are screwed into the bolt holes 13 and rotated in the tightening direction until a predetermined torque acts. ..
At this time, as shown in FIG. 6, a force can be applied to the bolt head 110 of the first bolt 11 with respect to the bolt hole 13 to rotate in the tightening direction until a predetermined torque acts on the bolt hole 13.

ここで、第一ボルト１１と第二ボルト１２の相対向する切断面１１１と切断面１２１は接しているため、図６に示すように第一ボルト１１のボルトの頭１１０に力を加えて締め付け方向に回転させると、第二ボルト１２もこれに追随する。 Here, since the cut surface 111 and the cut surface 121 of the first bolt 11 and the second bolt 12 which face each other are in contact with each other, as shown in FIG. 6, a force is applied to the bolt head 110 of the first bolt 11 to tighten it. When rotated in the direction, the second bolt 12 also follows this.

その後、図７に示すように、第一ボルト１１の回転操作用の穴１１５に回転操作工具１５を差し入れて、第二ボルト１２の回転操作用の凹み１２５に嵌め込み、第二ボルト１２のみを、第一ボルト１１に対し、締め付け方向と同一方向に所定角度回転させる。所定角度としては第二ボルト１２の中心軸からの偏心の量によるが１５〜１８０度の範囲てある。 After that, as shown in FIG. 7, the rotary operation tool 15 is inserted into the hole 115 for rotary operation of the first bolt 11 and fitted into the recess 125 for rotary operation of the second bolt 12, and only the second bolt 12 is The first bolt 11 is rotated by a predetermined angle in the same direction as the tightening direction. The predetermined angle depends on the amount of eccentricity of the second bolt 12 from the central axis, but is in the range of 15 to 180 degrees.

こうすることによって、径方向のずれによるロック作用により緩み止めされるのである。 By doing so, the loosening is prevented by the locking action due to the displacement in the radial direction.

このように、本発明のロックボルトは、第一ボルト１１と第二ボルト１２で部材１４を締め付けた後、第二ボルト１２のみを更に所定角度回転させることによって、簡単で迅速かつ確実で強固な緩み止め効果が得られるという優れた特徴を有するのである。 As described above, the lock bolt of the present invention is simple, quick, reliable and strong by tightening the member 14 with the first bolt 11 and the second bolt 12 and then rotating only the second bolt 12 by a predetermined angle. It has an excellent feature that a locking effect can be obtained.

実施例１では、小径ねじ部１２４のピッチが外周ねじ部１２１のピッチより小さくしてあるが、小径ねじ部１２４のピッチが外周ねじ部１２１のピッチと同じでも簡単で迅速かつ確実で強固な緩み止め効果が得られる。 In the first embodiment, the pitch of the small-diameter threaded portion 124 is smaller than the pitch of the outer peripheral threaded portion 121, but even if the pitch of the small-diameter threaded portion 124 is the same as the pitch of the outer peripheral threaded portion 121, it is easy, quick, reliable, and firm to loosen. A stopping effect is obtained.

図９に示すようにボルト穴２３が部材２４を付き抜けていて、ボルト穴２３の下方から回転操作工具２５を使用できる時は、図８に示すように第二ボルト２２において切断面１２２と反対側のねじ先の面に、外部から回転操作ができるような回転操作用の凹み２２５を設けることにより、
簡単で迅速かつ確実で強固な緩み止め効果が得られる。 As shown in FIG. 9, when the bolt hole 23 penetrates the member 24 and the rotary operation tool 25 can be used from below the bolt hole 23, as shown in FIG. 8, the second bolt 22 is opposite to the cut surface 122. By providing a recess 225 for rotation operation that allows the rotation operation from the outside, on the surface of the screw tip on the side,
Easy, fast, reliable and strong anti-loosening effect.

図１０又は図１１に示すように第二ボルト３２の切断面１２２に設けられた小径ねじ部１２４の回転操作用の凹みと一体化した棒である回転操作用偏心円柱部３２６を設けると、回転操作用偏心円柱部３２６は小径ねじ部１１４と相対向する切断面１１２と切断面１２２が接した状態で小径ねじ部１２４を螺合させた時、第一ボルト１１を貫通する回転操作用の穴１１５を貫通して第一ボルト１１の外部に出て外部から第二ボルト３２の回転操作ができるようになり、２種類の口径のスパナまたはボックスレンチだけでロックボルト３の締め付け操作とロック操作ができ、簡単で迅速かつ確実で強固な緩み止め効果が得られる。 As shown in FIG. 10 or FIG. 11, when the rotating operation eccentric cylindrical portion 326 which is a rod integrated with the rotating operation recess of the small diameter screw portion 124 provided on the cut surface 122 of the second bolt 32 is provided, The operation eccentric cylindrical portion 326 is a hole for rotating operation that penetrates the first bolt 11 when the small diameter screw portion 124 is screwed in a state where the cutting surface 112 and the cutting surface 122 facing the small diameter screw portion 114 are in contact with each other. The second bolt 32 can be rotated from the outside through the 115 through the first bolt 11 and the tightening operation and the locking operation of the lock bolt 3 can be performed only with a spanner or a box wrench having two kinds of diameters. It is easy, quick, reliable, and has a strong anti-loosening effect.

図１２に示すように第一ボルト４１の外周ねじ部４１１と第二ボルト４２の外周ねじ部４２１とがテーパねじになっていても簡単で迅速かつ確実で強固な緩み止め効果が得られる。 As shown in FIG. 12, even if the outer peripheral threaded portion 411 of the first bolt 41 and the outer peripheral threaded portion 421 of the second bolt 42 are tapered threads, a simple, quick, reliable, and firm locking effect can be obtained.

図１３に示すように第一ボルト５１の切断面１１２の方に偏心円柱部５１３を設け、第二ボルト５２の切断面１２２の方に小径ねじ穴５２４を開けても動作や機能は図１に示されたロックボルト１と同様であり、簡単で迅速かつ確実で強固な緩み止め効果が得られる。 As shown in FIG. 13, even if the eccentric cylinder portion 513 is provided on the cut surface 112 of the first bolt 51 and the small diameter screw hole 524 is opened on the cut surface 122 of the second bolt 52, the operation and function are as shown in FIG. Similar to the lock bolt 1 shown, it provides a simple, fast, reliable and strong anti-loosening effect.

図１４に示すように、第一ボルト１１と第二ボルト１２の相対向する切断面１１１と１２１に回転ストッパー用の凹部１１６と，回転ストッパー用の凸部１２６を設けることにより、図６に示すように第一ボルト１１のボルトの頭１１０に力を加えて締め付け方向に回転させた時、第一ボルト１１と第二ボルト１２の相対向する切断面１１２と切断面１２２が接していなくても接近しているだけで、第二ボルト１２が第一ボルト１１に追随するようにできる。 As shown in FIG. 14, by providing a concave portion 116 for a rotation stopper and a convex portion 126 for a rotation stopper on the cut surfaces 111 and 121 of the first bolt 11 and the second bolt 12 which face each other, as shown in FIG. As described above, when a force is applied to the bolt head 110 of the first bolt 11 to rotate it in the tightening direction, the cut surfaces 112 and 122 of the first bolt 11 and the second bolt 12 which face each other are not in contact with each other. The second bolt 12 can be made to follow the first bolt 11 only by approaching.

図１の小径ねじ部１２４と外周ねじ部１２１の方向が異なる（小径ねじ部１２４が右ねじなら外周ねじ部１２１は左ねじ、小径ねじ部１２４が左ねじなら外周ねじ部１２１は右ねじ）ようにしておくことで、図６に示すように第一ボルト１１のボルトの頭１１０に力を加えて締め付け方向に回転させた時、第一ボルト１１と第二ボルト１２の相対向する切断面１１２と切断面１２２が接していなくても、第二ボルト１２が第一ボルト１１に追随するようにできる。 The directions of the small-diameter threaded portion 124 and the outer peripheral threaded portion 121 in FIG. 1 are different (if the small-diameter threaded portion 124 has a right-hand thread, the outer-circumferential threaded portion 121 has a left-hand thread; By so doing, as shown in FIG. 6, when a force is applied to the bolt head 110 of the first bolt 11 to rotate it in the tightening direction, the cutting surfaces 112 of the first bolt 11 and the second bolt 12 which face each other are opposed to each other. Even if the cutting surface 122 is not in contact with the first bolt 11, the second bolt 12 can follow the first bolt 11.

１ ロックボルト
１１ 第一ボルト
１１０ ボルトの頭
１１１ 外周ねじ部
１１２ 切断面
１１４ 小径ねじ穴
１１５ 回転操作用の穴
１１６ 回転ストッパー用の凹部
１２ 第二ボルト
１２１ 外周ねじ部
１２２ 切断面
１２３ 偏心円柱部
１２４ 小径ねじ部
１２５ 回転操作用の凹み
１２６ 回転ストッパー用の凸部
１３ ボルト穴
１４ 部材
１５ 回転操作工具

２ ロックボルト
２１ 第一ボルト
２１０ ボルトの頭
２２ 第二ボルト
２２５ 回転操作用の凹み
２３ ボルト穴
２４ 部材
２５ 回転操作工具

３ ロックボルト
３２ 第二ボルト
３２６ 回転操作用偏心円柱部
３２７ 回転操作用ボルトの頭

４ ロックボルト
４１ 第一ボルト
４１０ ボルトの頭
４１１ 外周ねじ部
４１２ 切断面
４２ 第二ボルト
４２１ 外周ねじ部
４２２ 切断面

５ ロックボルト
５１ 第一ボルト
５１３ 偏心円柱部
５１４ 小径ねじ部
５１５ 回転操作用の穴
５２ 第二ボルト
５２４ 小径ねじ穴
５２５ 回転操作用の凹み 1 Lock Bolt 11 First Bolt 110 Head of Bolt 111 Peripheral Threaded Part 112 Cutting Surface 114 Small Diameter Screw Hole 115 Hole for Rotating Operation 116 Recess for Rotation Stopper 12 Second Bolt 121 Peripheral Threaded Part 122 Cutting Surface 123 Eccentric Cylindrical Part 124 Small diameter screw part 125 Recess for rotation operation 126 Convex part for rotation stopper 13 Bolt hole 14 Member 15 Rotation operation tool

2 Lock Bolt 21 First Bolt 210 Head of Bolt 22 Second Bolt 225 Recess for Rotation Operation 23 Bolt Hole 24 Member 25 Rotation Operation Tool

3 Lock bolts 32 Second bolts 326 Eccentric cylinders for rotation operation 327 Heads of rotation operation bolts

4 Lock Bolts 41 First Bolts 410 Bolt Heads 411 Peripheral Threaded Parts 412 Cutting Surfaces 42 Second Bolts 421 Peripheral Threaded Parts 422 Cutting Surfaces

5 Lock Bolt 51 First Bolt 513 Eccentric Cylindrical Part 514 Small Diameter Screw Part 515 Hole for Rotation Operation 52 Second Bolt 524 Small Diameter Screw Hole 525 Recess for Rotation Operation

Claims (12)

一本のボルトの軸を途中から軸と直角に二つに切断した形でボルトの頭を有する第一ボルトとねじ先を有する第二ボルトとからなるロックボルトであって、
第一ボルトと第二ボルトは、一つのボルト穴に螺合する雄ねじをボルトの軸の外周にそれぞれ有しており、
第二ボルトには第一ボルトとの切断面に第二ボルトの直径より小径の偏心円柱部が第二ボルトの中心軸に対して直角方向に偏心されて軸方向外方に突設されていると共に、偏心円柱部の外周には雄ねじが形成されている小径ねじ部が設けられている一方、
第一ボルトには、第二ボルトとの切断面に、第二ボルトに設けられた小径ねじ部と螺合する、小径ねじ穴が第一ボルトの中心軸に対して直角方向に偏心して開けられていて内部に雌ねじが形成されており、
第二ボルトに設けられた小径ねじ部を第一ボルトに設けられた小径ねじ穴に、相対する切断面が接した状態で螺合させると、両者の外周ねじ部の中心軸及びピッチが一致するように構成されていて、
第二ボルトには回転操作用の凹みが設けられている、
ロックボルト。 A lock bolt consisting of a first bolt having a bolt head and a second bolt having a screw tip in a form in which the shaft of one bolt is cut into two at right angles to the shaft,
The first bolt and the second bolt each have a male screw that is screwed into one bolt hole on the outer circumference of the bolt shaft,
An eccentric cylinder part having a diameter smaller than the diameter of the second bolt is eccentrically formed on the cross section of the second bolt, the diameter being smaller than the diameter of the second bolt, and the eccentric cylindrical part is provided so as to project axially outward. At the same time, a small-diameter threaded portion formed with a male thread is provided on the outer circumference of the eccentric cylindrical portion,
The first bolt has a small-diameter screw hole, which is screwed with a small-diameter screw portion provided on the second bolt, on the cut surface of the second bolt so as to be eccentric to the central axis of the first bolt. Internal thread is formed inside,
When the small-diameter threaded portion provided on the second bolt is screwed into the small-diameter threaded hole provided on the first bolt with the facing cut surfaces being in contact with each other, the central axes and pitches of the outer peripheral threaded portions of both are the same. Is configured as
The second bolt is provided with a recess for rotation operation,
Rock bolt. 一本のボルトの軸を途中から軸と直角に二つに切断した形でボルトの頭を有する第一ボルトとねじ先を有する第二ボルトとからなるロックボルトであって、
第一ボルトと第二ボルトは、一つのボルト穴に螺合する雄ねじをボルトの軸の外周にそれぞれ有しており、
第一ボルトには第二ボルトとの切断面に第一ボルトの軸の直径より小径の偏心円柱部が第一ボルトの中心軸に対して直角方向に偏心されて軸方向外方に突設されていると共に、偏心円柱部の外周には雄ねじが形成されている小径ねじ部が設けられている一方、
第二ボルトには、第一ボルトとの切断面に、第一ボルトに設けられた小径ねじ部と螺合する、小径ねじ穴が第二ボルトの中心軸に対して直角方向に偏心して開けられていて内部に雌ねじが形成されており、
第一ボルトに設けられた小径ねじ部を第二ボルトに設けられた小径ねじ穴に、相対する切断面が接した状態で螺合させると、両者の外周ねじ部の中心軸及びピッチが一致するように構成されていて、
第二ボルトには回転操作用の凹みが設けられている、
ロックボルト。 A lock bolt consisting of a first bolt having a bolt head and a second bolt having a screw tip in a form in which the shaft of one bolt is cut into two at right angles to the shaft,
The first bolt and the second bolt each have a male screw that is screwed into one bolt hole on the outer circumference of the bolt shaft,
An eccentric cylindrical portion having a diameter smaller than the diameter of the shaft of the first bolt is eccentric to the first bolt in a direction perpendicular to the central axis of the first bolt and protrudes outward in the axial direction. At the same time, the outer circumference of the eccentric cylinder part is provided with a small-diameter screw part formed with a male screw,
The second bolt has a small-diameter screw hole, which is screwed with a small-diameter screw portion provided on the first bolt, on the cut surface of the first bolt, and is eccentrically formed in a direction perpendicular to the central axis of the second bolt. Internal thread is formed inside,
When the small-diameter threaded portion provided on the first bolt is screwed into the small-diameter threaded hole provided on the second bolt with the opposite cutting surfaces in contact with each other, the central axes and pitches of the outer peripheral threaded portions of the two are the same. Is configured as
The second bolt is provided with a recess for rotation operation,
Rock bolt. 第一ボルトにおいて第一ボルトの中心軸と平行な方向に第一ボルトを貫通する穴を開けた
請求項１又は請求項２に記載されているロックボルト。 The lock bolt according to claim 1 or 2, wherein a hole is formed through the first bolt in a direction parallel to the central axis of the first bolt. 第二ボルトにおいて切断面側にある請求項１で記載の突設された小径ねじ部の上部又は請求項２で記載された小径ねじ穴の底部に外部から回転操作できるような凹みを設けた、
請求項３に記載されているロックボルト。 A recess is provided on the upper surface of the projecting small-diameter screw part according to claim 1 or on the bottom part of the small-diameter screw hole according to claim 2, which is located on the cut surface side of the second bolt.
The lock bolt according to claim 3. 第二ボルトにおいて切断面と反対側のねじ先の面に、外部から回転操作ができるような凹みを設けた、
請求項１又は請求項２に記載されているロックボルト。 In the second bolt, the surface of the screw tip opposite to the cut surface is provided with a recess that can be rotated from the outside.
The lock bolt according to claim 1 or 2. 第一ボルトと第二ボルトの切断面に小径ねじ部とは別に小さな凸部と凹部を設けて、小径ねじ部により相対する切断面が接近した状態で螺合させた時、両者の外周ねじ部の中心軸及びピッチが一致した所で小さな凸部と凹部が噛み合うようにし、それ以上小径ねじ部が回転しないようにした回転ストッパー付き
請求項１又は請求項２に記載されているロックボルト。 A small convex portion and a concave portion are provided on the cut surface of the first bolt and the second bolt in addition to the small-diameter threaded portion, and when the small-diameter threaded portions are screwed together so that the opposing cut surfaces are close to each other, the outer peripheral threaded portion of both The lock bolt according to claim 1 or 2, wherein a small stopper and a recess are engaged with each other when the center axis and the pitch of the lock bolt are aligned with each other, and the small diameter screw portion is prevented from rotating further. 小径ねじ部のピッチと外周ねじのピッチが同じ
請求項１又は請求項２に記載されているロックボルト。 The lock bolt according to claim 1 or 2, wherein the pitch of the small-diameter threaded portion and the pitch of the outer peripheral thread are the same. 小径ねじ部のピッチと外周ねじのピッチが異なる
請求項１又は請求項２に記載されているロックボルト。 The lock bolt according to claim 1 or 2, wherein the pitch of the small-diameter threaded portion and the pitch of the outer peripheral thread are different. 小径ねじ部のねじと外周ねじの方向が同じ（小径ねじ部が右ねじなら外周ねじも右ねじ、小径ねじ部が左ねじなら外周ねじも左ねじ）
請求項１又は請求項２に記載されているロックボルト。 The direction of the thread of the small diameter thread and the direction of the outer peripheral thread are the same (if the small diameter thread is right-handed, the outer peripheral thread is right-handed; if the small-diameter threaded part is left-handed, the outer peripheral thread is left-handed)
The lock bolt according to claim 1 or 2. 小径ねじ部のねじと外周ねじの方向が異なる（小径ねじ部が右ねじなら外周ねじは左ねじ、小径ねじ部が左ねじなら外周ねじは右ねじ）
請求項１又は請求項２に記載されているロックボルト。 The direction of the small-diameter thread is different from that of the peripheral thread (if the small-diameter thread is a right-hand thread, the peripheral thread is a left-hand thread; if the small-diameter thread is a left-hand thread, a peripheral thread is a right-hand thread)
The lock bolt according to claim 1 or 2. 請求項４に記載されている第二ボルトに設けられた外部から回転操作できるような凹みと一体化した棒を設け、第二ボルトに設けられた外部から回転操作できるような凹みと一体化した棒は、切断面側に設けられた小径ねじ部を第一ボルトと第二ボルトの相対する切断面が接した状態で小径ねじ穴に螺合させた時、第一ボルトを貫通する穴を貫通して第一ボルトの外部に棒の先端が出て外部から第二ボルトの回転操作ができるようにした
請求項４に記載されているロックボルト。 A rod integrated with a recess provided on the second bolt which can be rotated from the outside is provided, and integrated with a recess provided on the second bolt which can be rotated from the outside. The rod penetrates through the hole that passes through the first bolt when the small-diameter screw part provided on the cut surface side is screwed into the small-diameter screw hole with the opposite cut surfaces of the first bolt and the second bolt in contact with each other. The lock bolt according to claim 4, wherein the tip of the rod is exposed to the outside of the first bolt so that the second bolt can be rotated from the outside. 第一ボルトの外周ねじと第二ボルトの外周ねじとがテーパねじからなる
請求項１又は請求項２に記載されているロックボルト。 The lock bolt according to claim 1 or 2, wherein the outer peripheral thread of the first bolt and the outer peripheral thread of the second bolt are taper threads.
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JP3187298U (en) * 2013-08-30 2013-11-21 株式会社サカムラハイテックス Double lock nut
JP2018040495A (en) * 2017-12-13 2018-03-15 祐二 澤田 Locknut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11920626B2 (en) 2019-04-30 2024-03-05 Toshimitu TOKUMOTO Non-loosening bolt

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