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JP4154631B2 - Fasteners for bolts and nuts - Google Patents

Fasteners for bolts and nuts Download PDF

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Publication number
JP4154631B2
JP4154631B2 JP31972398A JP31972398A JP4154631B2 JP 4154631 B2 JP4154631 B2 JP 4154631B2 JP 31972398 A JP31972398 A JP 31972398A JP 31972398 A JP31972398 A JP 31972398A JP 4154631 B2 JP4154631 B2 JP 4154631B2
Authority
JP
Japan
Prior art keywords
nut
bolt
collar
spiral
fastening portion
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.)
Expired - Fee Related
Application number
JP31972398A
Other languages
Japanese (ja)
Other versions
JP2000120645A (en
Inventor
通 日野
洋 伊関
Original Assignee
株式会社浅羽製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社浅羽製作所 filed Critical 株式会社浅羽製作所
Priority to JP31972398A priority Critical patent/JP4154631B2/en
Publication of JP2000120645A publication Critical patent/JP2000120645A/en
Application granted granted Critical
Publication of JP4154631B2 publication Critical patent/JP4154631B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Bolts, Nuts, And Washers (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、主として橋桁や電力ケーブルの鉄塔等の屋外構造物を対象としたボルト・ナットの締結部に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
連結部材のボルト・ナットによる締結部には、締め付けられたナットが振動や衝撃等によってって不当に緩み出すことを防止できるナット緩み止めのための提案が多くなされ実用化もされている。一方、不心得者によって故意にナットが外され、連結された構成部材が解体される危険に曝されるという事故を防止できるようにした締結部も提案されているが、かかる締結部を構成するには必要とする部品数等の面で問題があった。本発明はかかる問題を解決したものであって、その目的は、構成が簡単であって締結作業も容易迅速にできるボルト・ナットの締結部を提供することにある。
【0003】
【課題を解決するための手段】
上記目的を達成するために、本発明の特徴とするボルト・ナットの締結部は、ボルトに螺合して締付けられているナットの頂面部と接合させるようにして、そのナットから突出しているボルトにカラーを回転可能に遊嵌し、このカラー内に没入できる大きさに形成されている螺旋ナットを上記ボルトに螺合して該カラー内に相対的回転ができるように収容し、そのカラーの上記ナット側に臨む口縁の内側に形成されている肩部に上記螺旋ナットを当接して成るものである。
【0004】
この構成のボルト・ナットの締結部において、螺旋ナットの先端部(切断面)側に製作時の仕上げの関係でバリが生じていると、ボルトに遊嵌したカラーを回転させた場合、そのカラーと螺旋ナットは摩擦抵抗でボルトから外れる方向へ共回りができるようになる。カラーと螺旋ナットが共回りしてボルトから外れる方向へ移動すると、ナットの戻し操作が可能になってボルト・ナットの締結が故意に解除されてしまうという危険が生じるので、かかる危険を解消するためにはカラーの肩部にワッシャーを装着するのが好ましく、このワッシャーがカラーと螺旋ナット間に介在することによって、カラーと螺旋ナットに共回りを生じさせる摩擦抵抗を解消することができる。
【0005】
【発明の実施の形態】
以下に、本発明の実施の形態を図面を参照しながら説明する。1は金属製のカラーであり、ボルト5に螺合して締め付けられたナット6の頂面部6aと接合するようにして該ボルト5に回転可能に遊嵌されている。カラー1の片側の口縁(ボルト5に遊嵌した時のナット6側に臨む口縁)2の内側は金属製の螺旋ナット3が当接できる肩部2aに形成されている。螺旋ナット3はボルト5に螺合すると共に、カラー1内には該カラー1とは相対的回転ができるように、かつ没入状態に収容されている。図中、4はカラー1の肩部2aに装着した金属製のワッシャーである。
【0006】
以上のように構成されている本ボルト・ナットの締結部は、螺旋ナット3によってカラー1はボルト5上における移動が阻止され、またナット6はカラーの存在により戻り方向への操作ができないため、ボルト5とナット6の締結状態は強固に確定する。したがって、カラー1を破壊して螺旋ナット3をボルト5より取外さない限りはナット6の戻し操作は不能となり、前述したような不心得者による犯行を防止できる。
【0007】
また、ワッシャー4がカラー1と螺旋ナット3の間に存在しているので、カラー1の肩部2aと螺旋ナット3の先端部(切断面)3aとの直接接触がなくなり、両者間に生じる摩擦抵抗によってカラー1と螺旋ナット3が共回りする不都合から回避できる。なお螺旋ナット3の巻き数は2.5〜3程度が好ましく、また、カラー1内に没入後の螺旋ナット3の締め付けは、例えば、操作棒(図示せず)の先端を螺旋ナット3の手前側の端部(切断面)3bに当て、螺旋ナット3を螺進させ操作により容易に行なうことができる。
【0008】
【発明の効果】
本発明は上記の如くであって、締結が完了した後のナット操作は不能となり、締結部の不当な解放操作ができなくなるもので、被接続部材の解体につながる危険な犯行を防止する上に有効である。また、締結部は、基本的にはボルトに遊嵌するカラーとボルトに螺合する螺旋ナットによる簡単な構成はであるから、締結作業が容易迅速にできる利点もある。
【図面の簡単な説明】
【図1】 本発明の締結部に用いられている金具部品の斜視図である。
【図2】 図1に示すものが用いられている本発明の実施の形態であって、一部が切り欠かれている正面図である。
【符号の説明】
1はカラー、2は口縁、2は肩部、3は螺旋ナット、4はワッシャー、5はボルト、6はナット、6aは頂面部である。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bolt / nut fastening portion mainly for outdoor structures such as bridge girders and power cable towers.
[0002]
[Prior art and problems to be solved by the invention]
There have been many proposals and practical applications for nut loosening prevention that can prevent the tightened nut from unreasonably loosening due to vibration, impact, or the like at the fastening portion of the connecting member by bolts and nuts. On the other hand, there has been proposed a fastening portion that can prevent an accident that the nut is intentionally removed by an unskilled person and the connected components are exposed to the risk of being disassembled. Had a problem in terms of the number of parts required. The present invention solves such a problem, and an object of the present invention is to provide a bolt and nut fastening portion that has a simple configuration and can be fastened easily.
[0003]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the bolt and nut fastening portion characterized by the present invention is a bolt protruding from the nut so as to be joined to the top surface portion of the nut screwed into the bolt. A collar is rotatably fitted in the collar, and a spiral nut formed in a size that can be immersed in the collar is screwed into the bolt so as to be relatively rotatable in the collar. The spiral nut is brought into contact with a shoulder formed inside the lip facing the nut side.
[0004]
In the bolt / nut fastening part of this configuration, if there is a burr on the tip (cut surface) side of the spiral nut due to the finish during manufacture, when the collar loosely fitted to the bolt is rotated, the collar And the spiral nut can rotate in the direction away from the bolt by frictional resistance. If the collar and the spiral nut rotate together and move away from the bolt, the nut can be returned and the bolt and nut will be deliberately released. In this case, it is preferable to attach a washer to the shoulder portion of the collar. When this washer is interposed between the collar and the spiral nut, the frictional resistance that causes the collar and the spiral nut to rotate together can be eliminated.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a metal collar, which is loosely fitted to the bolt 5 so as to be joined to the top surface portion 6a of the nut 6 screwed into the bolt 5 and tightened. The inner side of one side edge of the collar 1 (the edge facing the nut 6 when loosely fitted to the bolt 5) 2 is formed in a shoulder 2a on which a metal spiral nut 3 can abut. The spiral nut 3 is screwed into the bolt 5 and is accommodated in the collar 1 so as to be rotatable relative to the collar 1 and in an immersive state. In the figure, 4 is a metal washer attached to the shoulder 2 a of the collar 1.
[0006]
The fastening portion of the present bolt / nut configured as described above is prevented from moving the collar 1 on the bolt 5 by the spiral nut 3, and the nut 6 cannot be operated in the return direction due to the presence of the collar. The fastening state of the bolt 5 and the nut 6 is firmly determined. Therefore, unless the collar 1 is destroyed and the spiral nut 3 is removed from the bolt 5, the return operation of the nut 6 becomes impossible, and the crime by the unskilled person as described above can be prevented.
[0007]
Further, since the washer 4 is present between the collar 1 and the spiral nut 3, there is no direct contact between the shoulder 2a of the collar 1 and the tip (cut surface) 3a of the spiral nut 3, and the friction generated between them. It is possible to avoid the inconvenience that the collar 1 and the spiral nut 3 rotate together due to resistance. The number of turns of the spiral nut 3 is preferably about 2.5 to 3, and tightening of the spiral nut 3 after being immersed in the collar 1 is performed, for example, by placing the end of an operation rod (not shown) in front of the spiral nut 3. It can be easily carried out by pushing the spiral nut 3 against the side end (cut surface) 3b.
[0008]
【The invention's effect】
The present invention is as described above, and the nut operation after the fastening is completed becomes impossible, and the unfair release operation of the fastening portion cannot be performed. In order to prevent a dangerous crime leading to the disassembly of the connected member. It is valid. In addition, since the fastening portion basically has a simple configuration of a collar that is loosely fitted to the bolt and a spiral nut that is screwed to the bolt, there is also an advantage that the fastening operation can be easily and quickly performed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a metal fitting used in a fastening portion according to the present invention.
FIG. 2 is a front view of the embodiment of the present invention in which the one shown in FIG. 1 is used, with a part cut away.
[Explanation of symbols]
1 is a collar, 2 is a lip, 2 is a shoulder, 3 is a spiral nut, 4 is a washer, 5 is a bolt, 6 is a nut, and 6a is a top surface.

Claims (2)

ボルトに螺合して締め付けられたナットの頂面部と接合させるようにして、そのナットから突出しているボルトにカラーを回転可能に遊嵌し、このカラー内に没入できる大きさに形成されている螺旋ナットを上記ボルトに螺合して該カラー内に相対的回転ができるように収容しそのカラーの上記ナット側に臨む口縁の内側に形成されている肩部に上記螺旋ナットを当接して成ることを特徴とするボルト・ナットの締結部 So as to bond with the top surface of the clamped nut screwed to the bolt, and loosely fitted collar bolt protruding from the nut rotating capable, it is formed to a size that can be immersed within this color the in which helical nut housing to allow relative rotation in the collar screwed to the bolt, the helical nut shoulder formed on the inner side of the rim facing the nut side of the collar A bolt and nut fastening portion characterized by abutting . カラーの肩部にワッシャーが装着されている請求項1記載のボルト・ナットの締結部The bolt and nut fastening portion according to claim 1, wherein a washer is attached to the shoulder portion of the collar.
JP31972398A 1998-10-07 1998-10-07 Fasteners for bolts and nuts Expired - Fee Related JP4154631B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31972398A JP4154631B2 (en) 1998-10-07 1998-10-07 Fasteners for bolts and nuts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31972398A JP4154631B2 (en) 1998-10-07 1998-10-07 Fasteners for bolts and nuts

Publications (2)

Publication Number Publication Date
JP2000120645A JP2000120645A (en) 2000-04-25
JP4154631B2 true JP4154631B2 (en) 2008-09-24

Family

ID=18113461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31972398A Expired - Fee Related JP4154631B2 (en) 1998-10-07 1998-10-07 Fasteners for bolts and nuts

Country Status (1)

Country Link
JP (1) JP4154631B2 (en)

Also Published As

Publication number Publication date
JP2000120645A (en) 2000-04-25

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