JP2017089875A - Looseness prevention structure for headed bolt - Google Patents

Looseness prevention structure for headed bolt Download PDF

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JP2017089875A
JP2017089875A JP2015231131A JP2015231131A JP2017089875A JP 2017089875 A JP2017089875 A JP 2017089875A JP 2015231131 A JP2015231131 A JP 2015231131A JP 2015231131 A JP2015231131 A JP 2015231131A JP 2017089875 A JP2017089875 A JP 2017089875A
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bolt
head
small
upper member
pressing
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JP6286641B2 (en
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良三 太田
Ryozo Ota
良三 太田
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Abstract

PROBLEM TO BE SOLVED: To surely inhibit looseness resulting from vibration or the like with simple work, when a headed bolt is screwed.SOLUTION: A looseness prevention structure for a headed bolt is configured such that after a headed bolt 1 passes through a bolt hole 18 of an upper member 17, and is screwed into a lower member 20, two nails 7 are inserted toward an inlet corner part 19 of the bolt hole of the upper member through two drilled holes 5, cutting blades 9 of wedge parts at tips of the two nails are bitten into the inlet corner part of the bolt hole by screwing a small bolt 10 for pushing-in, and then the headed bolt is connected to the upper member.SELECTED DRAWING: Figure 1

Description

本発明は並目、細目等の頭付ボルトの緩み止めを行う方法である。  The present invention is a method for preventing loosening of head bolts such as coarse and fine.

頭付ボルトの緩み止めの方法としては座金を上部材に固定し、この座金を折り曲げる等の方法によりボルトの頭の回転を阻止するものがあるが、締付けた時の頭の角度によっては確実に回り止めを行うことが困難なこともある。  There is a method to prevent the head bolt from loosening by fixing the washer to the upper member and bending the washer to prevent the bolt head from rotating, but depending on the angle of the head when tightened It may be difficult to prevent rotation.

頭付ボルトをねじ込んだとき、振動等により生じる緩みを確実に、しかも簡単な作業により制止することが必要である。  When the headed bolt is screwed in, it is necessary to securely prevent loosening caused by vibrations and the like and to restrain it by simple work.

頭付ボルト１の頭部上面３に上部材１７のボルト孔１８の直径と同寸法の円形の罫描線を描き、この線上の１８０°相対する２ケ所の位置よりボルト頭部２を貫通して、その下面４より少く深くまで垂直に２本の錐孔５を穿孔しておき、頭付ボルトを上部材１７のボルト孔１８を通して、下部材２０にねじ込んだ後、この２本の錐孔を通して上部材のボルト孔の入口角部１９に向って、２本の釘７を挿入し、その先端の楔部８が入口角部１９に接するまで降下させる。  A circular ruled line having the same dimensions as the diameter of the bolt hole 18 of the upper member 17 is drawn on the head upper surface 3 of the headed bolt 1 and penetrates the bolt head 2 from two positions 180 ° opposite to each other on the line. The two conical holes 5 are perforated vertically to a depth slightly deeper than the lower surface 4, and the headed bolt is screwed into the lower member 20 through the bolt hole 18 of the upper member 17, and then passed through the two conical holes. The two nails 7 are inserted toward the entrance corner 19 of the bolt hole of the upper member, and lowered until the wedge 8 at the tip contacts the entrance corner 19.

次に、ボルト頭部の中央の小ねじ孔６に押え込み用小ボルト１０をねじ込んで、２本の釘を下方に強く押下げて、その先端の楔部の切刃９をボルト孔の入口角部に喰い込ませて、頭付ボルトを上部材に結合させるようにすることにより、頭付ボルトの緩みを止めることができる。  Next, a small screw 10 for pressing is screwed into the small screw hole 6 in the center of the bolt head, and the two nails are pressed down strongly, and the cutting edge 9 of the wedge part at the tip of the nail is moved to the entrance angle of the bolt hole. It is possible to stop loosening of the headed bolt by biting into the part and coupling the headed bolt to the upper member.

ボルト頭部２と押え込み用小ボルト１０の間に歯付き座金１４を介在させて、その２個の小孔１６に２本の釘７を貫通させて、ボルト頭部との間の廻り止めを行い、又歯付き座金の歯１５を押え込み用小ボルトの鍔部１２の外周の切込み溝１３に折り曲げて噛合せることにより、押え込み用ボルトの戻り回転を阻止するようにする。  A toothed washer 14 is interposed between the bolt head 2 and the small pressing bolt 10, and two nails 7 are passed through the two small holes 16 to prevent rotation between the bolt head. The tooth 15 of the toothed washer is bent and meshed with the cut groove 13 on the outer periphery of the collar portion 12 of the small pressing bolt so as to prevent the return rotation of the pressing bolt.

本発明の実施により頭付ボルトを強く締め込んだ後、簡単な方法で確実な緩み止めが可能になる。そして激しい振動にも耐えることが出来るようになる。  According to the present invention, after the head bolt is strongly tightened, it is possible to reliably prevent loosening by a simple method. And it will be able to withstand intense vibration.

本発明の実施形態の一例として、頭付ボルトをねじ込んだ後、その頭部より押え込み用ボルトにより釘を押下げた後、歯付き座金で廻り止めした状態の縦断面図As an example of an embodiment of the present invention, after a headed bolt is screwed in, a nail is pushed down from the head by a pressing bolt, and then a longitudinal cross-sectional view in a state where it is stopped by a toothed washer 図１の平面図Plan view of FIG. 図１の側面図Side view of FIG. 図１に示した釘の正面図Front view of the nail shown in FIG. 図４の側面図Side view of FIG. 本発明の実施形態の一例として、頭付ボルトをねじ込んだ後、その頭部より押え板により釘を押下げた状態の縦断面図As an example of an embodiment of the present invention, after screwing a bolt with a head, a longitudinal sectional view of a state in which a nail is pushed down by a presser plate from the head 図６の平面図Plan view of FIG. 図６の側面図Side view of FIG.

頭付ボルト１の頭部上面３に上部材１７のボルト孔１８の直径と同寸法の円形の罫描線を描き、この線上の１８０°相対する２ケ所の位置よりボルト頭部２を貫通して、その下面４より少く深くまで垂直に２本の錐孔５を穿孔しておき、頭付ボルトを上部材１７のボルト孔１８を通して、下部材２０にねじ込んだ後、この２本の錐孔を通して上部材のボルト孔の入口角部１９に向って、２本の釘７を挿入し、その先端の楔部８が入口角部１９に接するまで降下させる。  A circular ruled line having the same dimensions as the diameter of the bolt hole 18 of the upper member 17 is drawn on the head upper surface 3 of the headed bolt 1 and penetrates the bolt head 2 from two positions 180 ° opposite to each other on the line. The two conical holes 5 are perforated vertically to a depth slightly deeper than the lower surface 4, and the headed bolt is screwed into the lower member 20 through the bolt hole 18 of the upper member 17, and then passed through the two conical holes. The two nails 7 are inserted toward the entrance corner 19 of the bolt hole of the upper member, and lowered until the wedge 8 at the tip contacts the entrance corner 19.

次にボルト頭部の中央の小ねじ孔６に押え込み用小ボルト１０をねじ込んで、２本の釘を下方に強く押下げて、その先端の楔部の切刃９をボルト孔の入口角部に喰い込ませて、頭付ボルトを上部材に結合させるようにすることにより頭付ボルトの緩みを止めることができる、釘の直径は錐穴５に滑合する寸法とし、その先端の楔部の切刃は鋭く、そして焼入しておく。  Next, a small screw 10 for pressing is screwed into the small screw hole 6 at the center of the bolt head, and the two nails are pressed down strongly, and the cutting edge 9 of the wedge part at the tip of the nail is inserted into the corner of the inlet of the bolt hole. The head bolt can be prevented from loosening by being bitten into the upper member, and the diameter of the nail is sized to slide into the conical hole 5, and the wedge portion at the tip thereof The cutting edge is sharp and hardened.

又、ボルト頭部２と押え込み用小ボルト１０の間に歯付き座金１４を介在させて、その２個の小孔１６に２本の釘７を貫通させて、ボルト頭部との間の廻り止めを行い、押え込み用小ボルトをねじ込むことにより、２本の釘の切刃９を上部材１７のボルト孔１８の入口角部１９に喰い込ませた後、その歯付き座金の歯１５をと押え込み用小ボルトの鍔部１２の外周の切込み溝１３に折り曲げ、噛合させることにより押え込み用小ボルトの戻り回転を阻止することができる。  Further, a toothed washer 14 is interposed between the bolt head 2 and the small pressing bolt 10 and two nails 7 are passed through the two small holes 16 so as to go around the bolt head. After stopping, and screwing in the small bolt for pressing, the two nail cutting blades 9 are bitten into the entrance corner 19 of the bolt hole 18 of the upper member 17, and then the tooth 15 of the toothed washer is removed. The return rotation of the small pressing bolt can be prevented by bending and engaging the cut groove 13 on the outer periphery of the flange 12 of the small pressing bolt.

押え込み用ボルトは頭付ボルトより浮上ることがないので、２本の釘の先端の楔部の切刃の喰い込みは絶対に緩むことがない、従ってこの頭付ボルトは激しい振動に対しても充分耐えることができる。  Since the holding bolt does not float above the head bolt, the biting of the cutting edge of the wedge part at the tip of the two nails will never loosen. Can withstand enough.

又、大きい径の頭付ボルトの緩み止めを行う場合は、２本の釘を押え込み用小ボルト１０で押え込む代りに、図６、図７及び図８に示すように２本のボルト２２により押え板２１を降下させて釘を押し下げ、その先端の楔部８をボルト孔の入口角部１９に喰い込ませる、このときは２本のボルトの長方形の共用座金２３の端を折りまげて、そのボルトの廻り止を行うことができる。  In order to prevent loosening of a large-diameter head bolt, two bolts 22 are used as shown in FIGS. 6, 7 and 8 instead of pressing the two nails with the small pressing bolt 10. The presser plate 21 is lowered to push down the nail, and the wedge portion 8 at the tip thereof is bitten into the entrance corner 19 of the bolt hole. At this time, the end of the rectangular common washer 23 of the two bolts is folded, The bolt can be turned around.

１・・・頭付ボルト ２・・・ボルト頭部
３・・・ボルト頭部上面 ４・・・ボルト頭部下面
５・・・錐孔 ６・・・ボルト頭部の小ねじ孔
７・・・釘 ８・・・釘の先端楔部
９・・・先端楔部の切刃 １０・・・押え込み用小ボルト
１１・・・小ボルトの頭部 １２・・・小ボルトの楔部
１３・・・鍔部外周の切込み溝 １４・・・歯付き座金
１５・・・歯付き座金の歯 １６・・・歯付き座金の小孔
１７・・・上部材 １８・・・上部材のボルト孔
１９・・・ボルト孔の入口角部 ２０・・・下部材
２１・・・押え板 ２２・・・押え板用ボルト
２２・・・長方形の共用座金DESCRIPTION OF SYMBOLS 1 ... Head bolt 2 ... Bolt head 3 ... Bolt head upper surface 4 ... Bolt head lower surface 5 ... Conical hole 6 ... Small screw hole of bolt head 7. · Nail 8 · · · Nail tip wedge portion 9 · · · Cutting edge of the tip wedge portion 10 · · · Small bolt for pressing 11 · · · Head of the small bolt 12 · · · Small wedge portion 13 · · · · Cut groove on outer periphery of collar 14 · Toothed washer 15 · Toothed toothed washer 16 · Toothed washer small hole 17 · Upper member 18 · Upper member bolt hole 19 · ..Inlet corners of bolt holes 20 ... Lower member 21 ... Presser plate 22 ... Presser plate bolt 22 ... Rectangular common washer

Claims (2)

頭付ボルトの緩み止めの構造において、頭付ボルト（１）の頭部上面（３）に上部材（１７）のボルト孔（１８）の直径と同寸法の円形の罫描線を描き、この線上の１８０°相対する２ケ所の位置よりボルト頭部（２）を貫通して、その下面（４）より少く深くまで垂直に２本の錐孔、（５）を穿孔しておき、頭付ボルトを上部材（１７）のボルト孔（１８）を通して、下部材（２０）にねじ込んだ後、この２本の錐孔を通して上部材のボルト孔の入口角部（１９）に向って、２本の釘（７）を挿入し、その先端の楔部（８）が入口角部（１９）に接するまで降下させ、次にボルト頭部の中央の小ねじ孔（６）に押え込み用小ボルト（１０）をねじ込んで、２本の釘を下方に強く押下げて、その先端の楔部の切刃（９）をボルト孔の入口角部に喰い込ませて、頭付ボルトを上部材に結合させるようにした頭付ボルトの緩み止めの構造。  In the structure of locking the head bolt, draw a circular ruled line of the same size as the diameter of the bolt hole (18) of the upper member (17) on the top surface (3) of the head bolt (1). Two bolt holes (5) are drilled vertically through the bolt head (2) from two positions opposite to each other by 180 ° and deeper than the lower surface (4). Is screwed into the lower member (20) through the bolt hole (18) of the upper member (17), and then is passed through the two conical holes toward the inlet corner (19) of the bolt hole of the upper member. The nail (7) is inserted and lowered until the wedge portion (8) at the tip thereof is in contact with the entrance corner (19), and then the small screw (10) for pressing into the small screw hole (6) at the center of the bolt head. ), And firmly push down the two nails downwards, so that the cutting edge (9) of the wedge part at the tip of the nail is at the entrance corner of the bolt hole. By bite, the structure of the loosening of the head with a bolt which is adapted to couple the head bolts to the upper member. 請求項１に記載の頭付ボルトの緩み止めの構造において、ボルト頭部（２）と押え込み用小ボルト（１０）の間に歯付き座金（１４）を介在させて、その２個の小孔（１６）に２本の釘（７）を貫通させて、ボルト頭部との間の廻り止めを行い、押え込み用小ボルトをねじ込むことにより、２本の釘の切刃（９）を上部材（１７）のボルト孔（１８）の入口角部（１９）に喰い込ませた後、その歯付き座金の歯（１５）を押え込み用小ボルトの鍔部（１２）の外周の切込み溝（１３）に折り曲げ、噛合させることにより押え込み用小ボルトの戻り回転を阻止しうるようにした頭付ボルトの緩み止めの構造。  2. A structure for preventing loosening of a head bolt according to claim 1, wherein a toothed washer (14) is interposed between the bolt head (2) and a small bolt (10) for pressing, and the two small holes are provided. The two nails (7) are passed through (16) to prevent rotation between the bolt heads, and the small bolts for pressing are screwed in, so that the cutting blades (9) of the two nails are attached to the upper member. After biting into the inlet corner (19) of the bolt hole (18) of (17), the tooth (15) of the toothed washer is cut into the groove (13) on the outer periphery of the collar (12) of the small bolt for pressing. ) To prevent loose rotation of the small bolt for pressing down, thereby preventing the head bolt from loosening.
JP2015231131A 2015-11-09 2015-11-09 Locking structure for head bolt Active JP6286641B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783811A (en) * 1953-08-10 1957-03-05 Phillips Screw Co Externally threaded insert element and keyed locking ring therefor
GB1224343A (en) * 1968-06-25 1971-03-10 James Charles Westbrook New or improved locking means for bolts and nuts
JPS63112612U (en) * 1987-01-16 1988-07-20
JPH02116012U (en) * 1989-03-03 1990-09-17
JP2006514238A (en) * 2003-03-07 2006-04-27 ジンテーズ　アクチエンゲゼルシャフト　クール Set screw for intramedullary nail
JP2008064299A (en) * 2006-09-07 2008-03-21 Sigma Kk Bolt protector and removing tool
JP2011179679A (en) * 2010-03-01 2011-09-15 Ichiro Yamazaki Locking pin mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783811A (en) * 1953-08-10 1957-03-05 Phillips Screw Co Externally threaded insert element and keyed locking ring therefor
GB1224343A (en) * 1968-06-25 1971-03-10 James Charles Westbrook New or improved locking means for bolts and nuts
JPS63112612U (en) * 1987-01-16 1988-07-20
JPH02116012U (en) * 1989-03-03 1990-09-17
JP2006514238A (en) * 2003-03-07 2006-04-27 ジンテーズ　アクチエンゲゼルシャフト　クール Set screw for intramedullary nail
JP2008064299A (en) * 2006-09-07 2008-03-21 Sigma Kk Bolt protector and removing tool
JP2011179679A (en) * 2010-03-01 2011-09-15 Ichiro Yamazaki Locking pin mechanism

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