JP2011127752A - Lock washer - Google Patents
Lock washer Download PDFInfo
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- JP2011127752A JP2011127752A JP2009299458A JP2009299458A JP2011127752A JP 2011127752 A JP2011127752 A JP 2011127752A JP 2009299458 A JP2009299458 A JP 2009299458A JP 2009299458 A JP2009299458 A JP 2009299458A JP 2011127752 A JP2011127752 A JP 2011127752A
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- lock washer
- nut
- outer circumferential
- divided
- circumferential part
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Abstract
Description
本発明は、ナットの緩み止めに関する。The present invention relates to a nut locking prevention.
本発明は動的荷重、繰り返し荷重、木やせなどでナットが緩まないようにしたものである。In the present invention, the nut is prevented from being loosened by a dynamic load, a repeated load, a thin wood or the like.
従来はスプリングワッシャなどがあったが、動的荷重、繰り返し荷重などで緩むことがあったが、本発明はこの課題を解消するためになされたものである。Conventionally, there has been a spring washer or the like, but it may be loosened by a dynamic load, a repeated load, or the like, but the present invention has been made to solve this problem.
動的荷重、繰り返し荷重などでナットが緩むことを防止するため従来はワッシャの摩擦力による緩み止め、更にはこれに鋼材などの弾性反発力を利用し緩み止めを向上させたスプリングワッシャなどがあったが、本発明は大きな弾性反発力を持つ皿ばね弾性体に加え楔効果を持つ係止片をワッシャに持たせた。In order to prevent the nut from loosening due to dynamic load, repeated load, etc., conventionally, there was a spring washer that improved the locking by using the elastic repulsive force of steel etc. However, in the present invention, the washer is provided with a locking piece having a wedge effect in addition to the disc spring elastic body having a large elastic repulsion force.
以上のように本発明は激しい震動、衝撃が長期におよんでも確実にボルトナット締め付け機材に、ロックワッシャの持つ弾性反発力による緩み止めとロックワッシャ係止片による楔効果で緩み止めを飛躍的に向上させたものである。As described above, the present invention dramatically prevents loosening due to the locking effect of the lock washer and the wedge effect of the lock washer locking piece to the bolts and nuts tightening equipment even under long periods of intense vibration and impact. It is an improvement.
以下に添付の図面に示された具体的な実施例に基づいて本発明の構成を詳細に説明する。Hereinafter, the configuration of the present invention will be described in detail based on specific embodiments shown in the accompanying drawings.
図1は、本発明に基づき構成されたロックワッシャを示している。このロックワッシャ1は外円周部1Aは平坦となっている。中央部には雄ねじが入る中心穴1Xがあり、中心穴外側と外円周部内側に挟まれた中円周部1Bを4等分する切り欠き1Yを設ける。又切り欠き1Yの外円周部内側にもロックワッシャ係止片に対応する係止切り欠き1Zを4ケ所設ける。
次いで4分割された中円周部1Bの部分を皿ばね円錐状に成形し、さらに中円周部1Bのナット締め付け方向最先端部1Wを係止曲げ角αを90度以上で折り曲げる。この折り曲げた部分がロックワッシャ係止片1Cとなる。円錐部、係止片は中央部を中心として対象に均等に4ケ所配置してある。また弾性力、硬度を維持するためロックワッシャは熱処理されている。
図2(A)は2は六角ナット、3は雄ねじ、4は木材又は金属材であり、ロックワッシャ締め付け前を示している。(B)はほぼロックワッシャ締め付け状態である。
六角ナットを締めつけ始めるとロックワッシャの円錐状部分、係止片部分を押圧しながら締め付けて行くため、常に木材との間に弾性反発力が働き、六角ナットの緩みを防止する。
又六角ナットを締めつけ時はロックワッシャ係止片Cを倒しながら締め付けるが、六角ナットの緩み回転方向となるとロックワッシャ係止角部1Dが六角ナットに食いつき緩み回転を阻む。この結果六角ナットの緩みは無くなる。また木材特有の収縮による木ヤセが発生してもロックワッシャの持つ円錐状の弾性反発力により、構造物の締結部に緩みが無くなり、構造強度の維持が図られるので耐震強度の向上に繋がる。FIG. 1 shows a lock washer constructed in accordance with the present invention. The lock washer 1 has a flat outer circumferential portion 1A. A central hole 1X into which a male screw is inserted is provided at the center, and a notch 1Y that divides the middle circumferential part 1B sandwiched between the outer side of the central hole and the inner side of the outer circumferential part into four equal parts is provided. Also, four locking notches 1Z corresponding to the lock washer locking pieces are provided inside the outer circumferential portion of the notch 1Y.
Next, the portion of the middle circumferential portion 1B that is divided into four is formed into a conical spring conical shape, and the leading end portion 1W in the nut tightening direction of the middle circumferential portion 1B is bent at an engagement bending angle α of 90 degrees or more. This bent portion becomes the lock washer locking piece 1C. The conical part and the locking piece are equally arranged at four places around the center part. In addition, the lock washer is heat-treated to maintain elasticity and hardness.
In FIG. 2A, 2 is a hexagonal nut, 3 is a male screw, 4 is a wood or metal material, and shows a state before tightening a lock washer. (B) is a state where the lock washer is almost tightened.
When you start tightening the hexagonal nut, the conical part and the locking piece of the lock washer are pressed and tightened, so an elastic repulsion force always acts between the wood and the hexagonal nut to prevent loosening.
Further, when the hexagon nut is tightened, the lock washer engaging piece C is tightened while being tilted, but when the hexagon nut is loosened and rotated, the lock washer engaging corner portion 1D bites against the hexagon nut and prevents the rotation. As a result, the hexagon nut is not loosened. In addition, even if wood rust due to shrinkage specific to wood occurs, the conical elastic repulsion force of the lock washer eliminates loosening of the fastening portion of the structure and maintains structural strength, leading to an improvement in seismic strength.
1 ロックワッシャ
2 六角ナット
3 雄ねじ
4 木材または金属部材
1A 外円周部
1B 中円周部
1C ロックワッシャ係止片
1D ロックワッシャ係止角部
1W ナット締め付け方向最先端部
1X 中心穴
1Y 切り欠き
1Z 係止切り欠き
α 係止曲げ角DESCRIPTION OF SYMBOLS 1
Claims (3)
中心穴と外円周部に挟まれた中円周部は2等分以上に分割し成形される。
分割は中心穴と繋がり、中心穴から放射線上に外円周部平坦部内側まで切り欠きで2等分以上に分割される。
各切り欠き面片側を切り起こし、ナット緩み止め係止片を設け、分割扇状部分を皿ばね状の円錐面に形成したナット緩み止め係止片を持つロックワッシャ。The outer circumference is flat and the center has a center hole into which a male screw can be inserted.
The middle circumferential part sandwiched between the center hole and the outer circumferential part is divided into two or more parts and formed.
The division is connected to the center hole, and is divided into two or more halves by notching from the center hole to the inside of the outer circumferential flat portion on the radiation.
A lock washer having a nut locking stopper that is formed by cutting one side of each notch surface, providing a nut locking stopper, and forming a segmented fan-like portion on a conical surface of a disc spring shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009299458A JP2011127752A (en) | 2009-12-17 | 2009-12-17 | Lock washer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009299458A JP2011127752A (en) | 2009-12-17 | 2009-12-17 | Lock washer |
Publications (1)
Publication Number | Publication Date |
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JP2011127752A true JP2011127752A (en) | 2011-06-30 |
Family
ID=44290538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009299458A Pending JP2011127752A (en) | 2009-12-17 | 2009-12-17 | Lock washer |
Country Status (1)
Country | Link |
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JP (1) | JP2011127752A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013256799A (en) * | 2012-06-12 | 2013-12-26 | R C Koa:Kk | Fastener |
CN110005692A (en) * | 2018-01-04 | 2019-07-12 | 美建建筑系统(中国)有限公司 | A kind of venting of dust explosion washer suitable for profiled sheet |
WO2020031252A1 (en) | 2018-08-07 | 2020-02-13 | ボルトエンジニア株式会社 | Lock washer and fastening structure |
CN111059129A (en) * | 2019-12-03 | 2020-04-24 | 谭程瑞 | Elastic gasket interlocking check bolt assembly |
-
2009
- 2009-12-17 JP JP2009299458A patent/JP2011127752A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013256799A (en) * | 2012-06-12 | 2013-12-26 | R C Koa:Kk | Fastener |
CN110005692A (en) * | 2018-01-04 | 2019-07-12 | 美建建筑系统(中国)有限公司 | A kind of venting of dust explosion washer suitable for profiled sheet |
WO2020031252A1 (en) | 2018-08-07 | 2020-02-13 | ボルトエンジニア株式会社 | Lock washer and fastening structure |
CN111059129A (en) * | 2019-12-03 | 2020-04-24 | 谭程瑞 | Elastic gasket interlocking check bolt assembly |
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