JP5424839B2 - Bolts, nuts and washers - Google Patents
Bolts, nuts and washers Download PDFInfo
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- JP5424839B2 JP5424839B2 JP2009276700A JP2009276700A JP5424839B2 JP 5424839 B2 JP5424839 B2 JP 5424839B2 JP 2009276700 A JP2009276700 A JP 2009276700A JP 2009276700 A JP2009276700 A JP 2009276700A JP 5424839 B2 JP5424839 B2 JP 5424839B2
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- 230000002265 prevention Effects 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Description
この発明は、鉄塔等の高所作業においてボルト、ナット等の落下を防止する落下防止具に関するものである。 The present invention relates to a fall prevention tool for preventing the fall of bolts, nuts, etc. during work at high places such as a steel tower.
鉄塔などの高所作業時には、高所での工具類、資材の取り扱い時の落下防止対策を施してきた。その方法は、小ロープや落下防止用工具を使用して行ってきた。この小ロープや落下防止用工具を使用して作業する場合には、その小ロープ及び落下防止工具を作業中切れ目なく使用しなければならない。また、前記落下防止対策が施せないボルト・ナット等の小物類については、蓋付きの工具袋などを使用して作業を行ってきた。 When working on high places such as steel towers, measures have been taken to prevent falling when handling tools and materials at high places. The method has been performed using a small rope and a fall prevention tool. When working with the small rope and the fall prevention tool, the small rope and the fall prevention tool must be used without interruption during the work. In addition, small items such as bolts and nuts that cannot be prevented from falling have been worked using a tool bag with a lid or the like.
しかし、上記ボルト・ナット等の小物は上げ下げ時には工具袋を使用して行われるが、ボルトの取り付け作業や取り外し作業の際は、落下防止対策を施せない状況が発生する。この様な場合、通常は、大口の工具袋を作業直下に設置することで対応しているが、近年、重要横過物件の近接工事や住宅密集地での工事が多く、この様な工事においては落下物は絶対避けなければならず、より完全かつ確実な落下防止対策が望まれている。 However, although small items such as bolts and nuts are raised and lowered by using a tool bag, a situation in which no drop prevention measures can be taken occurs when bolts are attached or removed. In such cases, it is usually handled by installing a large tool bag directly under the work, but in recent years, there have been many construction work in close proximity to important overpassed properties and densely populated houses. Since falling objects must be avoided, more complete and reliable measures to prevent falling are desired.
そこで、特許文献１に示すように、ボルト又はナットを保持する保持部と、前記保持部に接続され該保持部を吊下しうる吊着部とを備え、前記保持部は、一端が開口した筒体を有し、ボルト又はナットを当該筒体内に保持する落下防止具が開発されている。 Therefore, as shown in Patent Document 1, a holding part that holds a bolt or a nut and a hanging part that is connected to the holding part and can suspend the holding part are provided, and one end of the holding part is opened. A fall prevention tool having a cylinder and holding a bolt or nut in the cylinder has been developed.
また、特許文献２に示すように、ボルト又はナットを保持する保持部と、前記保持部に接続され該保持部を吊下しうる吊着部とを備え、前記保持部は、ボルト又はナットを回転不能に挿入しうる有底穴を有する基体と、ボルト又はナットを回転不能に挿入しうる貫通穴を有するシャッターと、前記有底穴と前記貫通穴との中心軸を一致させた状態で前記シャッターと前記基体とを相対的に回転させる回転機構と、を有する落下防止具が開発されている。 In addition, as shown in Patent Document 2, a holding unit that holds a bolt or a nut, and a hanging part that is connected to the holding unit and can suspend the holding unit, the holding unit includes a bolt or a nut. The base having a bottomed hole that can be inserted in a non-rotatable manner, a shutter having a through-hole into which a bolt or a nut can be inserted in a non-rotatable manner, and the center axis of the bottomed hole and the through-hole aligned with each other An anti-falling tool having a rotation mechanism for relatively rotating a shutter and the base has been developed.
前記特許文献１の落下防止具は、保持部でボルト頭体やナットを保持するため、一端が開口した筒体を設け、この筒体内にボルト頭体やナットを嵌め入れてこれを保持するため、この筒体側面に弾性を持たせたり、内部にフランジを設けて、筒体内にボルト頭体やナットを係止し、これらが外れないように工夫している。従って、構造も複雑で、ボルト頭体やナットを前記筒体内に嵌める作業が容易ではなく、煩雑である。 In order to hold the bolt head and nut in the holding portion, the fall prevention device of Patent Document 1 is provided with a cylinder body having one end opened, and the bolt head body and nut are fitted into the cylinder body to hold it. The cylinder side is provided with elasticity, or a flange is provided inside, and a bolt head or nut is locked in the cylinder so that they cannot be removed. Accordingly, the structure is complicated, and the operation of fitting the bolt head and nut into the cylinder is not easy and complicated.
また、前記特許文献２の落下防止具においても、前記保持部は、ボルト又はナットを回転不能に挿入しうる有底穴を有する基体と、ボルト又はナットを回転不能に挿入しうる貫通穴を有するシャッターと、前記シャッターと前記基体とを相対的に回転させる回転機構とを有する複雑な構成とともに、作業者の操作にあたっては、前記シャッターを回してその状態を保持しつつ貫通孔からボルト頭体やナットを基体の有底穴に挿入したり取り出したりする手間がかかり、作業の煩雑さは、前記特許文献１と同様である。 Also in the fall prevention device of Patent Document 2, the holding portion has a base having a bottomed hole into which a bolt or a nut can be inserted in a non-rotatable manner, and a through hole into which the bolt or the nut can be inserted in a non-rotatable manner. In addition to a complicated structure having a shutter and a rotation mechanism that relatively rotates the shutter and the base body, when operating by an operator, the bolt head or It takes time and labor to insert and remove the nut from the bottomed hole of the base body, and the complexity of the operation is the same as that of Patent Document 1.
送電線工事等において部材接続や切り離し時に使用するボルト・ナットの取り扱い量が多くなると前記の落下防止具では作業効率が低下することが予想される。このことから高所作業において可能な限り簡単な作業で安全確実に落下防止ができる工具が望まれる。また、形状の異なるすべてのボルト・ナット・ＴＧナット等に対応する工具が望まれる。 When the handling amount of bolts and nuts used when connecting or disconnecting members in power transmission line construction or the like is increased, it is expected that the work efficiency of the above-described fall prevention device is lowered. For this reason, a tool that can be safely and reliably prevented from falling by an as simple work as possible in a high place work is desired. Moreover, a tool corresponding to all bolts, nuts, TG nuts and the like having different shapes is desired.
そこで、この発明はボルト、ナット、ワッシャー等の小物が鉄でできていることに着眼し、強力な磁力で吸着するマグネットを使用することにより構造が簡単で、ボルト頭体やナットの係止作業がきわめて容易かつ確実なボルト・ナット等の落下防止具を提供することを目的としたものである。 Therefore, this invention pays attention to the fact that small parts such as bolts, nuts, washers, etc. are made of iron, and the structure is simple by using a magnet that attracts with strong magnetic force, and the bolt head and nut locking operation However, it is an object of the present invention to provide a drop prevention tool such as a bolt and a nut that is extremely easy and reliable.
請求項１の発明は、磁性体から成るボルト、ナット又はワッシャーを保持する保持部と、前記保持部を吊り下げ可能に接続した吊着部とから成るものを少なくとも２組設け、前記各組の保持部は前記ボルトの頭体平面を吸着して当該ボルトを支持可能で、かつナット又はワッシャーの側面を支持可能な板状の磁石と、当該磁石を保持する枠体を有し、前記各組の吊着部は可とう性を有するものから成り、その一端は前記各組の保持部の枠体に設けた回転継ぎ手に接続したボルト・ナット・ワッシャーの落下防止具とした。 The invention of claim 1 is provided with at least two sets of a holding portion for holding a bolt, a nut or a washer made of a magnetic material, and a hanging portion connected to the holding portion so that the holding portion can be suspended. The holding portion has a plate-like magnet capable of supporting the bolt by adsorbing the head plane of the bolt and supporting the side surface of the nut or washer , and a frame for holding the magnet. The hanging part is made of a flexible material, and one end of the hanging part is used as a bolt, nut and washer drop prevention device connected to a rotary joint provided on the frame of the holding part of each set.
また、請求項２の発明は、前記請求項１の発明において、前記少なくとも２組の内の少なくとも１組の保持部は磁石を保持する枠体がＬ型金具を有し、当該Ｌ型金具の一方の片の内側に前記磁石を設け、他方の片に前記回転継ぎ手を設け、この回転継ぎ手は前記他方の片に直角に回転軸を軸支し、当該回転軸の一端に前記吊着部の一端を接続したボルト・ナット・ワッシャーの落下防止具とした。 According to a second aspect of the present invention, in the first aspect of the present invention, at least one of the at least two sets of holding portions has an L-shaped bracket as a frame for holding a magnet, The magnet is provided inside one piece, and the rotary joint is provided on the other piece. The rotary joint pivotally supports the rotary shaft at a right angle to the other piece, and one end of the rotary shaft is attached to one end of the rotary shaft. Bolts, nuts, and washers with one end connected were used as fall prevention devices.
また、請求項３の発明は、前記磁石がメッキを施した鉄製のキャップ状の枠体で円盤状の磁石体の外周を被ったネオジキャップである、請求項１又は２に記載のボルト・ナット・ワッシャーの落下防止具とした。 The invention of claim 3 is a bolt or nut according to claim 1 or 2, wherein the magnet is a neody cap in which an outer periphery of a disk-like magnet body is covered with a plated iron cap-like frame body. -A washer drop prevention tool.
請求項１の発明によれば、この発明のボルト・ナット・ワッシャーの落下防止具の１組の保持部にボルトの頭体を係止し、他の組の保持部にナット又はワッシャーを係止するが、これらのボルト及びナット等の係止は、各保持部の磁石で吸着させるため、作業者の作業は極めて容易かつ迅速にでき、さらに確実である。また、この作業は、工具袋等の袋の中で行うことができるため、これらの係止作業の後に工具袋から、夫々吊着部につながったボルト及びナット等を引き出せばよく、これらのボルト又はナット等が外部に落下する恐れがない。さらに、当該ボルトを部材の孔等に通し、そのボルトの端部にナット等を螺着して数回回すまで、この発明の落下防止具の保持部にボルト、ナット等を係止しておくことができ、これらの作業中にもボルトやナット等が落下する恐れがない。また、吊着部は保持部に対して回転自在に接続されかつ可とう性を有するため、ナット等を回す際、吊着部が邪魔にならない。 According to the first aspect of the present invention, the bolt head is locked to one set of holding portions of the bolt, nut and washer fall prevention device of the present invention, and the nut or washer is locked to the other set of holding portions. However, since these bolts and nuts are locked by the magnets of the respective holding portions, the operator's work can be performed very easily and quickly, and is more reliable. Moreover, since this operation can be performed in a bag such as a tool bag, it is only necessary to pull out the bolts and nuts connected to the hanging portions from the tool bag after these locking operations. Or there is no risk of nuts falling outside. Further, the bolt is passed through the hole of the member, and the bolt, nut, etc. are locked to the holding portion of the fall prevention device of the present invention until the nut is screwed onto the end of the bolt and turned several times. The bolts and nuts are not likely to fall during these operations. Moreover, since the hanging part is rotatably connected to the holding part and has flexibility, the hanging part does not get in the way when the nut or the like is turned.
従って、ボルト、ナット、ワッシャーを安全に、落下させずに工具袋から取り出し、これらを所定の箇所に取り付けるまで保持することができる。そして、ナットのボルトに対する締め付けの際は、当該落下防止具を外し、工具等でナット等を締め付けることができる。また、これらのボルト、ナット等の取り外しの際も、工具等でナット等を緩めておき、その後、当該落下防止具をボルト、ナット等に係止した状態でこれらを取り外し、工具袋に入れてこれらのボルト、ナット、ワッシャーを落下防止具から取り外すことができ、これらのボルト、ナット、ワッシャーの落下防止を確実に行える。さらに、この落下防止具においては、ボルト、ナット等を磁石で係止するため係止するボルト、ナット、ワッシャー等の大きさや形状が異なっても広範囲で使用することができる。 Therefore, it is possible to safely remove the bolt, nut and washer from the tool bag without dropping them, and hold them until they are attached to predetermined locations. When the nut is tightened on the bolt, the fall prevention tool can be removed and the nut or the like can be tightened with a tool or the like. Also, when removing these bolts, nuts, etc., loosen the nuts, etc. with a tool, etc., then remove them with the fall prevention device locked to the bolts, nuts, etc., and place them in a tool bag. These bolts, nuts, and washers can be removed from the fall prevention device, and these bolts, nuts, and washers can be reliably prevented from falling. Further, this fall prevention device can be used in a wide range even if the size, shape, etc. of the bolts, nuts, washers, etc. to be locked are different because the bolts, nuts, etc. are locked with magnets.
また、請求項２の発明によれば、前記請求項１の効果に加え、少なくとも１組の保持部にＬ型金具及びこのＬ型金具に回転継ぎ手を有するため、この保持部にナット等の側面を係止すれば、当該ナット等を回転させても、当該保持部に接続された吊着部が回転せず、吊着部がよじれたりすることなく、作業性がより向上する。 According to the invention of claim 2, in addition to the effect of claim 1, at least one set of holding parts has an L-shaped metal fitting and a rotating joint in the L-shaped metal fitting. If the nut is locked, even if the nut or the like is rotated, the hanging portion connected to the holding portion does not rotate and the hanging portion is not kinked, and the workability is further improved.
また、請求項３の発明によれば、保持部に使用している磁石がネオジキャップ式の磁石であるため、磁力がきわめて強力であり、ボルトやナット等を強力に吸着し、落下防止効果がより確実である。 Further, according to the invention of claim 3, since the magnet used for the holding part is a neodycap type magnet, the magnetic force is extremely strong, and the bolt, nut, etc. are strongly adsorbed, and the fall preventing effect is obtained. More certain.
この発明は、ボルトやナット等の磁性体から成る小物を保持する保持部と、前記保持部を吊り下げ可能に接続した吊着部とから成るものを少なくとも２組設け、前記各組の保持部は前記ボルトの頭体平面を吸着して当該ボルトを支持可能で、かつナット等の小物の側面を支持可能な板状の磁石と、当該磁石を保持する枠体を有し、前記各組の吊着部は可とう性を有するものから成り、その一端は前記各保持部の枠体に設けた回転継ぎ手に固定したもので、これにより、構造が簡単で、ボルト頭体やナット等の小物の係止作業がきわめて容易かつ確実なボルト・ナット等の落下防止具とした。 The present invention is provided with at least two sets of holding parts for holding small items made of a magnetic material such as bolts and nuts, and hanging parts connected to the holding parts so as to be able to be suspended. Has a plate-like magnet capable of supporting the bolt by adsorbing the head plane of the bolt and supporting the side of a small object such as a nut, and a frame body for holding the magnet. The hanging part is composed of a flexible part, one end of which is fixed to a rotary joint provided on the frame of each holding part, and thus the structure is simple and small items such as bolt heads and nuts. The bolts, nuts, and other fall prevention tools are extremely easy and reliable.
以下、この発明の実施例１を図に基づいて説明する。図１はこの発明の落下防止具の斜視図、図２はこの発明の落下防止具のボルト及びナットを保持した状態を示す斜視図、図３はこの発明の落下防止具の使用状態を示す斜視図である。 Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a perspective view of the fall prevention device of the present invention, FIG. 2 is a perspective view showing a state in which the bolt and nut of the fall prevention device of the present invention are held, and FIG. 3 is a perspective view showing a use state of the fall prevention device of the present invention. FIG.
この発明の落下防止具１は、保持部２と、当該保持部２を吊り下げ可能に接続した吊着部３とで１組を成し、これを２組用意している。各組の保持部２は、ボルトの頭体平面を吸着して当該ボルトを支持可能で、かつナット等の小物の側面を支持可能な円盤状の磁石２ａと、当該磁石２を被冠、保持するキャップ状の枠体２ｂとからなり、前記磁石２ａの一側面はキャップ状の枠体２ｂの開口部から露出している。また、この磁石２ａ及びキャップ状の枠体２ｂによりネオジキャップ式マグネットを構成している。また、前記キャップ状の枠体２ｂの裏面中央には、段付きピンから成る回転継ぎ手２ｃが設けられている。この回転継ぎ手２ｃは、前記枠体２ｂに対して直角な回転軸を有し、この回転軸が枠体２ｂに対して回転自在となっている。 The fall prevention tool 1 of the present invention forms one set with the holding portion 2 and the hanging portion 3 to which the holding portion 2 is connected so as to be hung, and two sets thereof are prepared. Each set of holding parts 2 is a disk-shaped magnet 2a capable of supporting the bolt by adsorbing the head plane of the bolt and supporting the side of a small object such as a nut, and the magnet 2 being crowned and held. And a side surface of the magnet 2a is exposed from the opening of the cap-shaped frame 2b. The magnet 2a and the cap-shaped frame 2b constitute a neodymium cap magnet. A rotating joint 2c made of a stepped pin is provided in the center of the back surface of the cap-shaped frame 2b. The rotary joint 2c has a rotation axis perpendicular to the frame body 2b, and the rotation axis is rotatable with respect to the frame body 2b.
前記各組の吊着部３は、前記保持部２の回転継ぎ手２ｃの孔に通したダブルリンク３ａと、当該ダブルリンク３ａに一端を接続したセーフティコード３ｂとから成る。このセーフティコード３ｂは両端に開閉扉付きのフック３ｃを有し、前記ダブルリンク３ａは一方のフック３ｃに掛けられている。従って、前記回転継ぎ手２ｃは、キャップ状の枠体２ｂに対して直角な回転軸によって回転自在となっているので、ダブルリンク３ａは保持部２に対して回転自在である。なお、この吊着部３の部材は非磁性体が好ましい。 Each set of the hanging portions 3 includes a double link 3a that passes through a hole of the rotary joint 2c of the holding portion 2 and a safety cord 3b that has one end connected to the double link 3a. The safety cord 3b has hooks 3c with opening / closing doors at both ends, and the double link 3a is hung on one hook 3c. Accordingly, the rotary joint 2c is rotatable with a rotation axis perpendicular to the cap-shaped frame 2b, so that the double link 3a is rotatable with respect to the holding portion 2. The member of the hanging part 3 is preferably a nonmagnetic material.
作業に当たっては、前記２組のセーフティコード３ｂの一端のフック３ｃを予め作業者の工具袋又は胴綱に取り付けておき、前記工具袋に入っているボルト及びナットを、図２に示すように、一方の組の保持部２の磁石２ａにボルト４の頭体４ａの平面部を吸着させ、他方の組の保持部２の磁石２ａにナット５の側面を吸着させ、これらを保持しておく。そして、ボルト４及びナット５が落下防止具１のセーフティコード３ｂに接続されていることを確認し、図３に示すように、ボルト４を所定の部材６の孔に挿入し、当該部材５の反対側から突出したボルト４の端部にナット５を螺着する。 In the work, hooks 3c at one ends of the two sets of safety cords 3b are previously attached to the operator's tool bag or torso, and the bolts and nuts contained in the tool bag are as shown in FIG. The flat portion of the head 4a of the bolt 4 is attracted to the magnet 2a of the holding portion 2 of one set, and the side surface of the nut 5 is attracted to the magnet 2a of the holding portion 2 of the other set to hold them. Then, it is confirmed that the bolt 4 and the nut 5 are connected to the safety cord 3b of the fall prevention device 1, and the bolt 4 is inserted into the hole of the predetermined member 6 as shown in FIG. A nut 5 is screwed onto the end of the bolt 4 protruding from the opposite side.
この間、ボルト４及びナット５は夫々磁石２ａに吸着、保持されているので、万一作業者の手からボルト４又はナット５が離れても、当該落下防止具１に保持されているため、ボルト４又はナット５は下方に落下しない。さらに、図３に示す状態で、ボルト４が回転しても、保持部２の回転継ぎ手２ｃがキャップ状の枠体２ｂの中央部で回転自在に軸支されているため、ボルト４の回転がフック３ｃ及びセーフティコード３ｂに伝わらず、セーフティコード３ｂがよれたり捩じれたりすることがない。また、前記ナット５をボルト４の外周に沿って数回回転させても、このナット５を保持したセーフティコード３ｂも左程よじれない。 During this time, since the bolt 4 and the nut 5 are respectively attracted and held by the magnet 2a, even if the bolt 4 or the nut 5 is separated from the operator's hand, the bolt 4 and the nut 5 are held by the fall prevention device 1; 4 or nut 5 does not fall downward. Further, even if the bolt 4 rotates in the state shown in FIG. 3, the rotation joint 2c of the holding portion 2 is rotatably supported at the center portion of the cap-shaped frame 2b. The safety cord 3b is not twisted or twisted without being transmitted to the hook 3c and the safety cord 3b. Even if the nut 5 is rotated several times along the outer periphery of the bolt 4, the safety cord 3b holding the nut 5 is not twisted to the left.
次に、この発明の実施例２を説明する。図４は、この発明の落下防止具の斜視図であり、図５はこの発明の落下防止具の使用状態を示す斜視図である。 Next, a second embodiment of the present invention will be described. FIG. 4 is a perspective view of the fall prevention device of the present invention, and FIG. 5 is a perspective view showing a use state of the fall prevention device of the present invention.
この実施例２では、一方の組の保持部２のキャップ状の枠体２ｂの裏面に、スイベル型の回転継ぎ手２ｄを、キャップ状の枠体２ｂに対して直角な回転軸により回転自在に設け、当該回転継ぎ手２ｄに前記吊着部３の開閉扉付きフック３ｃを掛け、また、他方の組の保持部２のキャップ状の枠体２ｂをＬ型金具７の一方の片７ａの内側に設け、当該Ｌ型金具の他方の片７ｂにスイベル型の回転継ぎ手８を設け、この回転継ぎ手８は前記他方の片７ｂに直角に回転軸８ａを軸支し、当該回転軸８ａの一端に前記吊着部３の一端の開閉扉付きのフック３ｃを掛けたボルト・ナット等の落下防止具とした。他の構成は実施例１と同じである。 In the second embodiment, a swivel-type rotary joint 2d is provided on the back surface of the cap-shaped frame 2b of one pair of holding portions 2 so as to be rotatable by a rotation axis perpendicular to the cap-shaped frame 2b. The rotary joint 2d is hooked with the hook 3c with an opening / closing door of the hanging portion 3, and the cap-shaped frame 2b of the holding portion 2 of the other set is provided inside the one piece 7a of the L-shaped metal fitting 7. The swivel-type rotary joint 8 is provided on the other piece 7b of the L-shaped metal fitting, and the rotary joint 8 pivotally supports the rotary shaft 8a at a right angle to the other piece 7b, and the suspension shaft 8a is suspended at one end of the rotary shaft 8a. A fall prevention tool such as a bolt or nut with a hook 3c with an open / close door at one end of the landing portion 3 was used. Other configurations are the same as those of the first embodiment.
作業に当たっては、前記２組のセーフティコード３ｂの一端のフック３ｃを予め作業者の工具袋又は胴綱に取り付けておき、前記工具袋に入っているボルト及びナットを一方の組の保持部２の磁石２ａにボルト４の頭体４ａの平面部を吸着させ、他方の組のＬ型金具７を有する保持部２の磁石２ａにナット５の側面を吸着させ、これらを保持しておく。そして、ボルト４及びナット５が落下防止具１のセーフティコード３ｂに接続されていることを確認し、図５に示すように、ボルト４を所定の部材６の孔に挿入し、当該部材６の反対側から突出したボルト４の端部にナット５を螺着する。 In the work, hooks 3c at one end of the two sets of safety cords 3b are previously attached to the operator's tool bag or torso, and the bolts and nuts contained in the tool bag are attached to one set of holding portions 2 of the pair. The flat part of the head 4a of the bolt 4 is attracted to the magnet 2a, and the side surface of the nut 5 is attracted to the magnet 2a of the holding part 2 having the other set of L-shaped metal fittings 7 to hold them. Then, it is confirmed that the bolt 4 and the nut 5 are connected to the safety cord 3b of the fall prevention device 1, and the bolt 4 is inserted into the hole of the predetermined member 6 as shown in FIG. A nut 5 is screwed onto the end of the bolt 4 protruding from the opposite side.
この間、ボルト４及びナット５は夫々磁石２ａに吸着、保持されているので、万一作業者の手からボルト４又はナット５が離れても、当該落下防止具１に保持されているため、ボルト４又はナット５は下方に落下しない。さらに、図５に示す状態で、ボルト４が回転しても、保持部２の回転継ぎ手２ｄがキャップ状の枠体２ｂに対して回転自在となっているため、ボルト４の回転がフック３ｃ及びセーフティコード３ｂに伝わらず、セーフティコード３ｂがよれたり捩じれたりすることがない。また、前記ナット５をボルト４の外周に沿って数回回転させるとＬ型金具７は回転しても、前記ナット５の回転中心と当該Ｌ型金具７に回転自在に接続された回転継ぎ手８の中心とがほぼ同一線上に位置し、当該回転継ぎ手８が回転せず、このナット５を保持したセーフティコード３ｂもよじれたりしない。 During this time, since the bolt 4 and the nut 5 are respectively attracted and held by the magnet 2a, even if the bolt 4 or the nut 5 is separated from the operator's hand, the bolt 4 and the nut 5 are held by the fall prevention device 1; 4 or nut 5 does not fall downward. Further, even if the bolt 4 rotates in the state shown in FIG. 5, the rotation joint 2d of the holding portion 2 is rotatable with respect to the cap-shaped frame 2b. The safety cord 3b is not twisted or twisted without being transmitted to the safety cord 3b. Further, when the nut 5 is rotated several times along the outer periphery of the bolt 4, even if the L-shaped bracket 7 rotates, the rotation joint 8 that is rotatably connected to the rotation center of the nut 5 and the L-shaped bracket 7. Is located on the same line, the rotary joint 8 does not rotate, and the safety cord 3b holding the nut 5 is not twisted.
なお、上記実施例１及び２では、保持部２にボルト及びナットを夫々係止したが、これらに限らず、ワッシャー等の磁性体から成る小物を係止することもできる。また、上記実施例１及び２では、保持部と吊着部とから成るものを２組としたが、これは３組でも４組でもよい。他の組の保持部に前記ワッシャー等を係止し、前記ボルト、ナットの締め付けの際、ナットの内側にワッシャー等を介在させることもある。 In the first and second embodiments, the bolt and the nut are locked to the holding portion 2, respectively. However, the present invention is not limited thereto, and small items made of a magnetic material such as a washer can be locked. Moreover, in the said Example 1 and 2, although what comprised the holding | maintenance part and the hanging part was made into 2 sets, this may be 3 sets or 4 sets. The washer or the like may be locked to another set of holding portions, and the washer or the like may be interposed inside the nut when the bolt or nut is tightened.
１ 落下防止具 ２ 保持部
２ａ 磁石 ２ｂ キャップ状の枠体
２ｃ 回転継ぎ手 ２ｄ 回転継ぎ手
３ 吊着部 ３ａ ダブルリンク
３ｂ セーフティコード ３ｃ 開閉扉付きフック
４ ボルト ４ａ ボルト頭体
５ ナット ６ 部材
７ Ｌ型金具 ７ａ 一方の片
７ｂ 他方の片 ８ 回転継ぎ手
1 Fall prevention tool 2 Holding part
2a Magnet 2b Cap-shaped frame 2c Rotating joint 2d Rotating joint 3 Hanging part 3a Double link 3b Safety cord 3c Hook with door 4 Bolt 4a Bolt head 5 Nut 6 Member 7 L-shaped bracket 7a One piece 7b The other Piece 8 Rotating joint
Claims (3)
前記各組の保持部は前記ボルトの頭体平面を吸着して当該ボルトを支持可能で、かつナット又はワッシャーの側面を支持可能な板状の磁石と、当該磁石を保持する枠体を有し、
前記各組の吊着部は可とう性を有するものから成り、その一端は前記各組の保持部の枠体に設けた回転継ぎ手に接続したことを特徴とする、ボルト・ナット・ワッシャーの落下防止具。 At least two sets of a holding part that holds a bolt, a nut, or a washer made of a magnetic material and a hanging part that connects the holding part so as to be suspended can be provided.
Each set of holding portions has a plate-like magnet capable of supporting the bolt by adsorbing the head plane of the bolt and supporting the side surface of the nut or washer , and a frame body for holding the magnet. ,
The bolts, nuts, and washer drops, wherein the hanging parts of each set are made of a flexible material, and one end thereof is connected to a rotary joint provided on the frame of the holding part of each set. Prevention tool.
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| KR101819538B1 (en) * | 2017-09-08 | 2018-01-17 | 황성규 | A fastening tool of the one-way bolt unit |
| CN108643596B (en) * | 2018-05-14 | 2020-10-02 | 新沂市中振电器科技有限公司 | Protector for construction |
| CN109364393B (en) * | 2018-11-16 | 2023-08-15 | 中铁一局集团有限公司 | Portable safety hanging ring special for slideway |
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