JPH09257027A - Washer - Google Patents
WasherInfo
- Publication number
- JPH09257027A JPH09257027A JP6870196A JP6870196A JPH09257027A JP H09257027 A JPH09257027 A JP H09257027A JP 6870196 A JP6870196 A JP 6870196A JP 6870196 A JP6870196 A JP 6870196A JP H09257027 A JPH09257027 A JP H09257027A
- Authority
- JP
- Japan
- Prior art keywords
- washer
- bolt
- elasticity
- polyisocianate
- polyole
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Bolts, Nuts, And Washers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボルト／ナットに
よる締め付けを行う際に使用するワッシャー（座金）に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer (washer) used when tightening with bolts / nuts.
【０００２】[0002]
【従来の技術】ボルト／ナットによる締め付けは振動に
よりボルトやナットが回転し緩みやすいので、ボルトの
頭側、ナット側のいずれか一方又は両方にワッシャーを
嵌め、その緩衝効果によりボルトやナットが回転するの
を防止するが、それでも時間の経過と共に締め付けが緩
むのを避けられない。2. Description of the Related Art When tightening bolts / nuts, the bolts and nuts are easily rotated and loosened due to vibration. However, it is inevitable that the tightening will loosen over time.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、ボルトによ
る締め付けが緩みにくく、取扱が便利なワッシャーを提
供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a washer which is difficult to loosen when tightened by bolts and is easy to handle.
【０００４】[0004]
【課題を解決するための手段】本発明に関わるワッシャ
ーは、ドーナツ形状に成形された弾性を有するプラスチ
ック磁石であることを特徴とする。The washer according to the present invention is characterized in that it is a plastic magnet having a donut shape and having elasticity.
【０００５】本発明のワッシャーは、その弾性による緩
衝効果ばかりでなく、磁石としての吸着力によりボルト
やナットが回転するのを防ぎ、ボルト／ナットによる締
め付けが緩むのを効果的に防止する。また取り付け時に
も、ワッシャーが磁力でボルトに吸着した状態に維持さ
れ落下することがないので、作業が容易になる。The washer of the present invention not only has a cushioning effect due to its elasticity, but also prevents the bolts and nuts from rotating due to the attraction force as a magnet, and effectively prevents loosening of tightening by the bolts / nuts. In addition, since the washer is magnetically attracted to the bolt and does not drop even when attached, the work is facilitated.
【０００６】[0006]
【発明の実施の形態】プラスチック磁石としては、ナイ
ロン樹脂、エポキシ樹脂などをバインダーとして用いて
永久磁石原料粉末を成形し帯磁させたものが知られてい
るが、優れた弾性を有するものとして、ポリウレタン樹
脂をバインダーとするもの、即ち永久磁石原料粉末とポ
リイソシアネート及びポリオールを混合し、触媒を加え
てポリイソシアネートとポリオールを反応させ、固化し
たのち帯磁させたもの、或は永久磁石原料粉末とポリイ
ソシアネート及びポリオールを混合し、触媒及び発泡剤
を加えてポリイソシアネートとポリオールを反応させ、
発泡固化したのち帯磁させたものが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION As a plastic magnet, it is known that a raw material powder of a permanent magnet is molded and magnetized by using a nylon resin, an epoxy resin or the like as a binder. Resin as a binder, that is, a mixture of permanent magnet raw material powder, polyisocyanate and polyol, a catalyst is added to react polyisocyanate and polyol, and solidified and then magnetized, or permanent magnet raw material powder and polyisocyanate. And a polyol are mixed, a catalyst and a foaming agent are added to react the polyisocyanate and the polyol,
It is preferable that the material is foamed and solidified and then magnetized.
【０００７】ポリイソシアネートとしてはトリレンジイ
ソシアネート（ＴＤＩ）のような芳香族系ポリイソシア
ネート、ヘキサメチレンジイソシアネート（ＨＤＩ）の
ような脂肪族系ポリイソシアネートのいずれでも使用で
きる。ポリオールとしてはポリプロピレングリコールの
ようなポリエーテルポリオールが好ましく用いられる
が、ポリエステルポリオールを用いることもできる。触
媒としてはジブチルチンジラウレートのような有機金属
系、又はトリエチレンジアミンのような３級アミン類、
発泡剤としては水又はフルオロカーボン類を用いる。原
料の選択、使用割合、発泡条件などを選択により、任意
の密度、任意の弾性を有するポリウレタン樹脂シートを
製造できる。これは当業者にとって周知の技術である。As the polyisocyanate, any of aromatic polyisocyanates such as tolylene diisocyanate (TDI) and aliphatic polyisocyanates such as hexamethylene diisocyanate (HDI) can be used. A polyether polyol such as polypropylene glycol is preferably used as the polyol, but a polyester polyol can also be used. As a catalyst, an organometallic compound such as dibutyltin dilaurate, or a tertiary amine such as triethylenediamine,
Water or fluorocarbons is used as the foaming agent. A polyurethane resin sheet having an arbitrary density and an arbitrary elasticity can be produced by selecting a raw material, a use ratio, a foaming condition and the like. This is a technique well known to those skilled in the art.
【０００８】[0008]
【発明の効果】本発明のワッシャーは、その弾性による
緩衝効果ばかりでなく、磁石としての吸着力によりボル
トやナットが回転するのを防ぎ、ボルト／ナットによる
締め付けが緩むのを効果的に防止する。また取り付け時
にも、ワッシャーが磁力でボルトに吸着した状態に維持
され落下することがないので、作業が容易になる。The washer of the present invention not only has a cushioning effect due to its elasticity, but also prevents the bolts and nuts from rotating due to the attraction force as a magnet, and effectively prevents loosening of tightening by bolts / nuts. . In addition, since the washer is magnetically attracted to the bolt and does not drop even when attached, the work is facilitated.
Claims (3)
プラスチック磁石であることを特徴とするワッシャー。1. A washer which is a plastic magnet having elasticity which is formed into a donut shape.
磁石原料粉末とポリイソシアネート及びポリオールを混
合し、触媒を加えてポリイソシアネートとポリオールを
反応させ、固化したのち帯磁させたものである請求項１
に記載のワッシャー。2. The elastic plastic magnet is obtained by mixing a permanent magnet raw material powder, polyisocyanate and a polyol, adding a catalyst to react the polyisocyanate and the polyol, solidifying and magnetizing the mixture.
The washer described in.
磁石原料粉末とポリイソシアネート及びポリオールを混
合し、触媒及び発泡剤を加えてポリイソシアネートとポ
リオールを反応させ、発泡固化したのち帯磁させたもの
である請求項１に記載のワッシャー。3. A plastic magnet having elasticity is obtained by mixing a permanent magnet raw material powder with polyisocyanate and a polyol, adding a catalyst and a foaming agent to react the polyisocyanate and the polyol, foaming and solidifying them, and then magnetizing them. The washer according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6870196A JPH09257027A (en) | 1996-03-25 | 1996-03-25 | Washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6870196A JPH09257027A (en) | 1996-03-25 | 1996-03-25 | Washer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09257027A true JPH09257027A (en) | 1997-09-30 |
Family
ID=13381345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6870196A Pending JPH09257027A (en) | 1996-03-25 | 1996-03-25 | Washer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09257027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207147A (en) * | 2020-03-03 | 2020-05-29 | 中铁隆昌铁路器材有限公司 | Magnetic ring for preventing looseness of threaded fastener and using method thereof |
-
1996
- 1996-03-25 JP JP6870196A patent/JPH09257027A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207147A (en) * | 2020-03-03 | 2020-05-29 | 中铁隆昌铁路器材有限公司 | Magnetic ring for preventing looseness of threaded fastener and using method thereof |
| CN111207147B (en) * | 2020-03-03 | 2021-07-16 | 中铁隆昌铁路器材有限公司 | Magnetic ring for preventing looseness of threaded fastener and using method thereof |
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