JP2006316986A

JP2006316986A - Cylindrical washer with projection and grooved bolt for screwing tool

Info

Publication number: JP2006316986A
Application number: JP2005168800A
Authority: JP
Inventors: Yasukazu Kitamura; 康和北村
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-13
Filing date: 2005-05-13
Publication date: 2006-11-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grooved bolt and a cylindrical washer with projection free from loosening of a screw. <P>SOLUTION: A groove is formed on a screw thread of the bolt, and the washer provided with projection on its bottom surface to be fitted to the groove of the bolt, is formed into the cylindrical shape. As the bolt and the washer are fixed, and then a nut and the washer can be fixed, the bolt, the washer and the nut can be integrated, and the loosening of the bolt and the nut can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Detailed Description of the Invention

この発明は、ボルトやナットを用いて部材を締結するときにボルトやナットの弛みを防止するのを目的とした、溝付きボルト及び突起付き円柱形座金に関するものである。The present invention relates to a bolt with a groove and a cylindrical washer with a projection for the purpose of preventing loosening of the bolt or nut when a member is fastened using the bolt or nut.

従来は割りピンを通したり、バネ座金を使用したり等がある。Conventionally, there are a split pin and a spring washer.

Problems to be solved by the invention

従来の方法では次の様な欠点があった、割りピンを通す場合手間が掛かり其の上割りピンを通す穴の位置と締め付けたナットの上端にどうしても多少の間隔が生じたり、バネ座金ではナットを完全に止めるには不完全である。
本発明は以上のような欠点を無くす為に考案したものである。The conventional method had the following disadvantages. It takes time to pass the split pin, and there is a slight gap between the position of the hole through which the split pin is passed and the upper end of the tightened nut. Is completely incomplete.
The present invention has been devised to eliminate the above drawbacks.

Means for solving the problem

ボルトのネジ山に溝を設け、このボルトの溝に合致する様に底面に突起を設けた座金を円柱形にする事により、ボルトと座金を固定させ次に、ナットと座金を固定させる事が出来て、ボルト、座金、ナットが一体となる様にしてボルトやナットの弛みを防止する、本発明は以上の構成よりなる、弛み止め防止の、溝付きボルト及び突起付き円柱形座金である。It is possible to fix the bolt and washer, and then fix the nut and washer by forming a groove in the screw thread and making the washer with a protrusion on the bottom to match the bolt groove. Thus, the bolt, the washer and the nut are integrated so that the bolt and the nut are prevented from loosening. The present invention is a grooved bolt and a projection-type cylindrical washer having the above-described configuration, which prevents the loosening.

本発明は部材を締結するとき、ネジ山に切り込みを入れて溝（４）を設けたボルト（３）に、この溝に合致するような突起（２）を底面に設けた円柱形座金（１）を、はめ込みナット（５）で締め付ける、この時円柱形座金（１）の直径よりも、ちいさい径のナット（５）を使用するのでナット（５）は円柱形座金（１）の中に入り込んでしっかりと締め付ける。ナット（５）は、ほとんど六角ナットなので、円に内接する六角形の場合、円柱形座金（１）の内壁と六角ナット（５）の外壁の間にすき間間隔（６）が出来るので締め付けた後、円柱形座金（１）の側面をナット（５）の側面に軽く叩いて押し付け，隙間間隔（６）を無くすれば、ナット（５）と円柱形座金（１）が一体となって固定され、一方、円柱形座金（１）とボルト（３）は、ボルトの溝（４）に座金の突起（２）がはめ込まれて一体化され固定されているので、部材はしっかりと締結され、ナットがゆるもうとしても弛まない、一方ナット（５）を弛めるときはナット（５）の側面に押し付けられている円柱形座金（１）の側面を広げて原状に戻せばナットは簡単に弛められて円柱形座金も繰り返し使用できる。In the present invention, when a member is fastened, a cylindrical washer (1) provided with a projection (2) on the bottom surface of a bolt (3) in which a thread is cut and a groove (4) is provided to match the groove. ) Is tightened with a fitting nut (5). At this time, a nut (5) having a diameter smaller than the diameter of the cylindrical washer (1) is used, so the nut (5) enters the cylindrical washer (1). Tighten firmly. Since the nut (5) is almost a hexagon nut, in the case of a hexagon inscribed in a circle, after tightening because there is a gap (6) between the inner wall of the cylindrical washer (1) and the outer wall of the hexagon nut (5) If the side of the cylindrical washer (1) is lightly tapped against the side of the nut (5) and pressed to eliminate the gap (6), the nut (5) and the cylindrical washer (1) are fixed together. On the other hand, the cylindrical washer (1) and the bolt (3) are integrated and fixed with the projection (2) of the washer fitted into the groove (4) of the bolt, so that the member is firmly fastened and the nut If the nut (5) is loosened, the nut can be easily loosened by expanding the side of the cylindrical washer (1) pressed against the side of the nut (5) and returning it to its original shape. Cylindrical washers can be used repeatedly.

The invention's effect

ボルトのネジ山に溝を設けこの溝に座金の突起をはめ込む事により、座金とボルトが一体となり、座金は弛もうとしても弛まず，一方、ナットは座金の側面が押し付けられているので固定化され、ボルト、座金、ナットが一体化されて弛まない構造になり、ボルトやナットのゆるみの欠点を解決する事が出来る。By installing a groove in the screw thread of the bolt and fitting the washer protrusion into this groove, the washer and the bolt are integrated, and the washer does not loosen even if it loosens, while the nut is fixed because the side of the washer is pressed. Bolts, washers, and nuts are integrated into a structure that does not loosen, and the drawbacks of loose bolts and nuts can be solved.

突起付き円柱形座金を底面から見た斜視図である。It is the perspective view which looked at the cylindrical washer with a projection from the bottom. 溝付きボルトの斜視図である。It is a perspective view of a grooved bolt. 溝付きボルトの平面図である。It is a top view of a bolt with a groove. 突起付き円柱形座金とナットを組み合わせた斜視図である。It is the perspective view which combined the cylindrical washer with a protrusion, and a nut.

Explanation of symbols

１突起付き円柱形座金
２突起
３ボルト
４ボルトのネジ山に切り込まれた溝
５ナット
６座金とナットのすき間間隔1 Cylindrical Washer with Protrusion 2 Protrusion 3 Bolt 4 Groove Cut into Bolt Thread 5 Nut 6 Clearance between Washer and Nut

Claims

A grooved bolt, characterized in that a groove is provided by cutting a bolt thread when fixing a member to be fastened using a bolt and a nut.

A cylindrical washer with a protrusion, wherein a protrusion is provided on the bottom surface of the cylindrical washer so as to match the groove of the grooved bolt according to claim 1.

A cylindrical washer characterized by fixing the nut and the washer by making the washer cylindrical.