JP2007046779A - Assembly which is easily disassembled and fastened, structure which is easily disassembled and fastened, male screw for easy disassembling and fastening, male screw with washer for easy disassembling and fastening, and manufacturing method therefor - Google Patents

Assembly which is easily disassembled and fastened, structure which is easily disassembled and fastened, male screw for easy disassembling and fastening, male screw with washer for easy disassembling and fastening, and manufacturing method therefor Download PDF

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JP2007046779A
JP2007046779A JP2006194316A JP2006194316A JP2007046779A JP 2007046779 A JP2007046779 A JP 2007046779A JP 2006194316 A JP2006194316 A JP 2006194316A JP 2006194316 A JP2006194316 A JP 2006194316A JP 2007046779 A JP2007046779 A JP 2007046779A
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male screw
washer
diameter
head
larger
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JP2006194316A
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Japanese (ja)
Inventor
Kazuo Sugiyama
一雄 杉山
Tadashi Tajima
唯志 田島
Kazuya Yoshida
一也 吉田
Masanobu Tanigawa
雅信 谷川
Yoshio Shindo
芳男 進藤
Hideo Takaara
秀男 高荒
Mizuho Kato
瑞穂 加藤
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Tokai University
Tokin Corp
Sharp Corp
Union Seimitsu Co Ltd
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Tokai University
Sharp Corp
Union Seimitsu Co Ltd
NEC Tokin Corp
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Priority to JP2006194316A priority Critical patent/JP2007046779A/en
Publication of JP2007046779A publication Critical patent/JP2007046779A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly which is easily disassembled and fastened and a structure which is easily disassembled and fastened which do not need the control of fastening torque at the time of fastening, and which make secure operation possible. <P>SOLUTION: The assembly which is easily disassembled and fastened is constituted by attaching one member having a through hole for a male screw to the female screw part of the other member having the female screw part with the male screw and a washer. The male screw has an intermediate part between the male screw part and the head having a larger diameter than the male screw part, and the intermediate part, which is provided by forming a level difference with the male screw part, has a diameter which is larger than the outer diameter of the male screw part and smaller than the diameter of the head. Then the washer is arranged between the side of the male screw part of the head of the male screw and the other member. The washer has an inner diameter, which is larger than the diameter of the intermediate part of the male screw and smaller than the diameter of the head of the male screw, and an outer diameter which is larger than the diameter of the head of the male screw. When the washer is heated to predetermined temperature or more, it is deformed and the inner diameter of the washer becomes larger than or equal to the diameter of the head of the male screw. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、コンピューターや家電製品などの電気製品をはじめとする各種機器（物品）などにおいて、ねじによる締結が可能で、かつ、所定の温度以上に加熱すると該ねじによる締結が無効となる易分解締結部によって組み立てられた易分解締結組み立て品、及び、そのような組み立て品を可能とする易分解締結構造に関する。   The present invention is capable of fastening with screws in various devices (articles) including electric products such as computers and home appliances, and is easily disassembled that the fastening with screws becomes invalid when heated to a predetermined temperature or higher. The present invention relates to an easily disassembled fastening assembly assembled by a fastening portion, and an easily disassembled fastening structure that enables such an assembly.

コンピューターや家電製品などの電気製品をはじめとする物品の多くはねじを用いて組み立てられている。   Many articles, including electrical products such as computers and home appliances, are assembled using screws.

このような、ねじによって組み立てられた物品を廃棄する場合、その容積を減らし、あるいは、この物品の部材を有効に再利用するためにねじを外して分解する。   When discarding such an article assembled with screws, the volume is reduced or the screws are removed and disassembled to effectively reuse the parts of the article.

しかしながら、このような分解は、ねじによる締結箇所が多いとき、あるいは、多量の物品を分解するには、非常に煩わしい作業となる。   However, such disassembly is a very troublesome operation when there are many fastening points with screws or when disassembling a large amount of articles.

ここで、本発明者等は、特開２００５−１６７１３公報（特許文献１）により、本体に締結される締結部材の周囲において該締結部材の頭部と被締結部材との間に挟まれ、該締結部材の締付力により該被締結部材を押圧するねじ付属品であって、形状復元する材料で形成され、前記締結部材の頭部から抜けるように半径方向に開く一対の腕部を有し、該一対の腕部の先端側に、加熱されることにより軟化する接合材で連結された接合部を設けたねじ付属品や、本体に締結される締結部材の周囲において該締結部材の頭部と被締結部材との間に挟まれ、該締結部材の締付力により該被締結部材を押圧するねじ付属品であって、形状復元する材料で形成され、加熱されることにより、前記締結部材の頭部から抜けるように半径方向に開く一対の腕部を有するねじ付属品を提案し、このようなねじ付属品を組み立て時にワッシャとして用いる易分解締結部によって、所定の温度以上に加熱するだけで容易にねじによる締結を無効とすることができる技術について提案を行っている。   Here, the present inventors, according to Japanese Patent Laid-Open No. 2005-16713 (Patent Document 1), are sandwiched between the head of the fastening member and the fastened member around the fastening member fastened to the main body, A screw accessory that presses the member to be fastened by the fastening force of the fastening member, and is formed of a material whose shape is restored, and has a pair of arms that open in the radial direction so as to come out from the head of the fastening member A screw accessory provided with a joint connected by a joining material that softens when heated on the tip side of the pair of arms, and a head of the fastening member around a fastening member fastened to the body A screw accessory which is sandwiched between the fastening member and presses the fastened member with a fastening force of the fastening member, and is formed of a material whose shape is restored and heated, so that the fastening member A pair of arms that open radially so that they can come out of their heads A technology that makes it possible to invalidate the fastening with screws simply by heating it to a predetermined temperature or higher by using an easily disassembled fastening part that uses such a screw accessory as a washer during assembly. I am making a proposal.

このような易分解締結部によって組み立てられた物品は、例えばベルトコンベアシステムを備えた加熱炉に導入することにより、きわめて容易に分解することができ、またこのとき、大量の物品の分解処理にも対応が可能である。   Articles assembled by such easily disassembling fastening parts can be disassembled very easily, for example, by introducing them into a heating furnace equipped with a belt conveyor system. Correspondence is possible.

図１０には、形状記憶合金からなる易解体用のリング状のねじ付属品１０を用いた締結体構造の一例として、液晶テレビ２０の易分解締結部付近の部分拡大断面図が示されている。また、図１１には図１０のＫを付して示された部分の拡大部分断面図を示す。   FIG. 10 shows a partially enlarged sectional view of the vicinity of an easily disassembled fastening portion of the liquid crystal television 20 as an example of a fastening body structure using a ring-shaped screw accessory 10 made of a shape memory alloy for easy disassembly. . FIG. 11 is an enlarged partial cross-sectional view of a portion indicated by K in FIG.

液晶テレビ２０は、筐体としてのプラスチックシャーシ２１、液晶パネル本体２３、ランプ類（図示せず）、シート類など（図示せず）から構成されている。プラスチックシャーシ２１は、開口部を有するパネルケース（本体）２５と、開口部を覆うパネルカバー（被締結部材）２２とから構成されている。液晶パネル本体２３は、前後一対の板ガラス、液晶、偏光板、反射板、電子回路ユニットなどから構成されており、プラスチックシャーシ２１の内側に収容され、パネルケース２５とパネルカバー２２とに挟まれる状態で固定されている。   The liquid crystal television 20 includes a plastic chassis 21 as a housing, a liquid crystal panel body 23, lamps (not shown), sheets and the like (not shown). The plastic chassis 21 includes a panel case (main body) 25 having an opening and a panel cover (fastened member) 22 that covers the opening. The liquid crystal panel body 23 is composed of a pair of front and rear glass plates, liquid crystal, polarizing plate, reflector, electronic circuit unit, etc., and is housed inside the plastic chassis 21 and sandwiched between the panel case 25 and the panel cover 22. It is fixed with.

ここで、形状記憶合金とは、例えばＴｉ−Ｎｉ合金（両者の分子存在比はほぼ等しい）、Ｃｕ−Ｚｎ−Ａｌ合金などの所定の温度に加熱されることで記憶された形状に復元する性質（形状記憶特性）を有する合金である。   Here, the shape memory alloy is, for example, a property of being restored to a memorized shape by heating to a predetermined temperature, such as a Ti—Ni alloy (both molecular abundance ratios are substantially equal), a Cu—Zn—Al alloy, or the like It is an alloy having (shape memory characteristics).

形状記憶合金に形状を記憶させるための形状記憶処理は、合金組成、用途などにより異なるものであるが、大気中、真空中、不活性ガス中のいずれかの雰囲気において、例えば４００〜８００℃の処理温度で、５〜６０分保持することにより行われている。ここで用いられたねじ付属品１０は、大気中において、７５０℃の処理温度で、１０分間保持することにより、記憶処理が行われている。   The shape memory treatment for storing the shape in the shape memory alloy varies depending on the alloy composition, application, etc., but in any atmosphere in the atmosphere, vacuum, or inert gas, for example, 400-800 ° C. It is carried out by holding at the treatment temperature for 5 to 60 minutes. The screw accessory 10 used here is stored in the atmosphere by holding it at a processing temperature of 750 ° C. for 10 minutes.

成形された形状記憶合金が、相変態により記憶形状に復元する逆変態開始温度は、合金元素、合金組成により大きく異なるが、ここで用いられたチタン−ニッケル系形状記憶合金からなるねじ付属品１０の逆変態開始温度は、約１００℃（この例での所定の温度）である。   The reverse transformation start temperature at which the molded shape memory alloy is restored to the memory shape by the phase transformation varies greatly depending on the alloy element and the alloy composition, but the screw accessory 10 made of the titanium-nickel shape memory alloy used here. The reverse transformation start temperature is about 100 ° C. (predetermined temperature in this example).

形状記憶合金からなるリング状のねじ付属品１０は、図１２（ａ）にその正面を、図１２（ｂ）に図１２（ａ）のＬＬにおける断面を示すような形状をしており、半径方向に開く一対の腕部１２及び１３を有し、一対の腕部１２および１３の先端１２ａ及び１３ａ側に、適当な係止角度θとなるよう設けられた、鈎状の係止部１２ｂ及び１３ｂが互いに係止しあうことにより一対の腕部１２及び１３が開くことなく係止されてリング形状が保たれている。   The ring-shaped screw accessory 10 made of a shape memory alloy has a shape that shows a front view in FIG. 12A and a cross section at LL in FIG. A pair of arm portions 12 and 13 that open in the direction, and a hook-shaped locking portion 12b that is provided on the distal ends 12a and 13a side of the pair of arm portions 12 and 13 so as to have an appropriate locking angle θ; By engaging 13b with each other, the pair of arm portions 12 and 13 are locked without opening and the ring shape is maintained.

このようなねじ付属品１０は所定の温度以上に加熱されると鈎状の係止部１２ｂ及び１３ｂによる係止が解除されて、一対の腕部１２及び１３が半径方向に開いて図１４に示すように変形して内径が拡径するが、このとき、変形後のワッシャの内径が併用する雄ねじ頭部の直径と同等またはその頭部の直径より大きくなるよう雄ねじを選択して、その雄ねじによる締結の際にワッシャとして用いる。   When such a screw accessory 10 is heated to a predetermined temperature or higher, the locking by the hook-shaped locking portions 12b and 13b is released, and the pair of arm portions 12 and 13 are opened in the radial direction, as shown in FIG. The inner diameter of the washer is increased by deformation as shown, but at this time, the male screw is selected so that the inner diameter of the washer after deformation is equal to or larger than the diameter of the head of the male screw used together. Used as a washer when fastening by

円環座金１５は、ねじ付属品１０のいわゆる、「座り」を改善するとともに、ねじ付属品１０のパネルカバー２２への食い込みを防止して、ねじ付属品１０が所定の温度以上に加熱されたときの動作を確実にする。   The annular washer 15 improves the so-called “sitting” of the screw accessory 10 and prevents the screw accessory 10 from getting into the panel cover 22 so that the screw accessory 10 is heated to a predetermined temperature or higher. Make sure the operation when.

また円環座金１５には、鍔１５ａが垂設されていて、この鍔１５ａが挿通孔２２ａの孔縁に係止されることで、円環座金１５の位置ずれが防止されている。   Further, a collar 15a is suspended from the annular washer 15, and the collar 15a is locked to the hole edge of the insertion hole 22a, so that the positional displacement of the annular washer 15 is prevented.

次に、プラスチックシャーシ２１（液晶テレビ２０）の組み立てと解体について、順に説明する。パネルケース２５の取付部２５ａに圧縮コイルばね２７を外挿させ、パネルケース２５とパネルカバー２２とを対向させるとともに、液晶パネル本体２３をパネルケース２５の収容空間２４に収め、圧縮コイルばね２７を縮めながらパネルカバー２２をパネルケース２５の開口部にあてがい、取付部２５ａの小径部２５ｂをパネルケース２５の挿通孔２２ａに嵌合させる。そして、円環座金１５をパネルケース２５の挿通孔２２ａに嵌め、円環座金１５の上にねじ付属品１０を載せ、円環座金１５とねじ付属品（スペーサ）１０に雄ねじ１７を挿通させ、雄ねじ１７の雄ねじ部１７ａをパネルケース２５の取付部２５ａに形成された雌ねじ部２５ｃに螺合させて、所定のトルクで雄ねじ１７を締め付ける。雄ねじ１７は、実際の組立工程において管理されている所定のトルクで締め付けられるようになっている。   Next, assembly and disassembly of the plastic chassis 21 (the liquid crystal television 20) will be described in order. The compression coil spring 27 is extrapolated to the mounting portion 25a of the panel case 25 so that the panel case 25 and the panel cover 22 face each other, and the liquid crystal panel main body 23 is accommodated in the housing space 24 of the panel case 25. While shrinking, the panel cover 22 is applied to the opening of the panel case 25, and the small diameter portion 25 b of the mounting portion 25 a is fitted into the insertion hole 22 a of the panel case 25. Then, the annular washer 15 is fitted into the insertion hole 22a of the panel case 25, the screw accessory 10 is placed on the annular washer 15, the male screw 17 is inserted into the annular washer 15 and the screw accessory (spacer) 10, The male screw portion 17a of the male screw 17 is screwed into a female screw portion 25c formed on the mounting portion 25a of the panel case 25, and the male screw 17 is tightened with a predetermined torque. The male screw 17 is tightened with a predetermined torque managed in the actual assembly process.

雄ねじ１７を締め付けると、雄ねじ１７の座面１７ｃとねじ付属品１０とが当接することとなるが、ねじ付属品１０は所定の温度に加熱されるまでは、最終的に加工された形状、即ち、その内径が雄ねじ１７の頭部１７ｂの外径より小さい状態を保つ。   When the male screw 17 is tightened, the seat surface 17c of the male screw 17 and the screw accessory 10 come into contact with each other, but the screw accessory 10 is finally processed until it is heated to a predetermined temperature, that is, The inner diameter is kept smaller than the outer diameter of the head 17 b of the male screw 17.

雄ねじ１７の締付力は、ねじ付属品１０と円環座金１５を介してパネルカバー２２を押圧して、プラスチックシャーシ２１が組み立てられるようになっている。   The tightening force of the male screw 17 presses the panel cover 22 via the screw accessory 10 and the annular washer 15 so that the plastic chassis 21 is assembled.

これら形状記憶合金からなるねじ付属品１０は、物品本体に締結される締結部材の周囲において該締結部材の頭部と被締結部材との間に挟まれ、該締結部材の締付力により該被締結部材を押圧するねじ付属品であって、形状復元する材料で形成され、加熱されることにより前記締結部材の頭部から抜けるように半径方向に開く一対の腕部を有するねじ付属品である。   The screw accessory 10 made of the shape memory alloy is sandwiched between the head of the fastening member and the fastened member around the fastening member fastened to the article body, and the fastened force of the fastening member causes the fastened member 10 to be fastened. A screw accessory that presses a fastening member, and is a screw accessory that is formed of a material that restores its shape and that has a pair of arms that open in a radial direction so as to be removed from the head of the fastening member when heated. .

図１３は、図１０に該当する箇所の、所定の温度以上に加熱するとねじによる締結が無効となる易分解締結部が加熱によって、ねじによる締結が無効となった状態を示す拡大部分断面図を示す。この図では、形状記憶合金からなるねじ付属品１０が加熱された結果、その形状記憶性により拡径してその内径が雄ねじ１７頭部１７ｂの外径以上となったため、圧縮コイルばね２７の働きで、ねじ付属品１０、円環座金１５及びパネルカバー（被締結部材）２２がプラスチックシャーシ２１から外れ、さらに液晶パネル本体２３がプラスチックシャーシ２１から離脱可能となった状態を示す。なお、このときのねじ付属品１０の状態（正面図）を図１４に示す。   FIG. 13 is an enlarged partial cross-sectional view showing a state in which the fastening by the screw becomes invalid due to heating of the easily disassembling fastening portion which becomes ineffective when fastened by a screw at a portion corresponding to FIG. 10 when heated to a predetermined temperature or higher. Show. In this figure, since the screw accessory 10 made of a shape memory alloy is heated, its diameter increases due to its shape memory property, and its inner diameter becomes equal to or larger than the outer diameter of the male screw 17 head 17b. Then, the screw accessory 10, the ring washer 15 and the panel cover (fastened member) 22 are detached from the plastic chassis 21, and the liquid crystal panel main body 23 can be detached from the plastic chassis 21. In addition, the state (front view) of the screw accessory 10 at this time is shown in FIG.

このようなねじ付属品１０を用いた締結構造は、物品の分解を確実に容易に行うことができるものとして期待されている。しかし、物品の組み立て及び分解作業をより容易かつ確実に行える技術の開発が求められている。
特開２００５−１６７１３公報 Such a fastening structure using the screw accessory 10 is expected to be able to reliably and easily disassemble the article. However, there is a demand for the development of technology that can more easily and reliably assemble and disassemble articles.
JP 2005-16713 A

そこで、本発明者等が物品の締結組み立て作業及び分解作業を再点検したところ、組み立て時には所定のトルクで雄ねじ１７を締める必要があるが、修理や点検、内部機器の増設・交換等で雄ねじ１７を外すことがあって、その場合の再度の締結では所定のトルクでの管理が困難で、ときには、より強いトルクで締めてしまう場合や、締結時のトルクの制御のばらつきが大きい場合もあって、分解時の動作に不安定性が見られ、さらに、それは、実際の分解時まで判明しないので、フィードバックによる解決が困難であった。   Accordingly, when the present inventors re-inspected the fastening and assembling work and the disassembling work of the article, it is necessary to tighten the male screw 17 with a predetermined torque at the time of assembling. In that case, it is difficult to manage with a predetermined torque, and sometimes tightening with a stronger torque or a large variation in torque control during fastening may occur. Instability was observed in the operation at the time of disassembly, and furthermore, it was not found until the actual disassembly, so that it was difficult to solve by feedback.

このため、本発明は、このような問題を解決する、即ち、締結時の締め付けトルクの制御が不要でありながら、確実な動作が可能な易分解締結組み立て品、易分解締結構造、及び、このような組み立て品及び構造を可能とする、雄ねじ、ワッシャ付き雄ねじ、及び、その製造方法を提供することを目的とする。   For this reason, the present invention solves such a problem, that is, an easily disassembled fastening assembly, an easily disassembled fastening structure capable of reliable operation, without the need for controlling the tightening torque at the time of fastening, and this It is an object of the present invention to provide a male screw, a male screw with a washer, and a method for manufacturing the same, which enable such an assembly and structure.

本発明の易分解締結組み立て品は上記課題を解決するため、請求項１に記載の通り、雌ねじ部を有する一方の部材の該雌ねじ部に、雄ねじとワッシャとにより、雄ねじ連通孔を有する他方の部材を組み付けてなる易分解締結組み立て品であって、前記雄ねじが雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きくかつ該頭部の直径よりも小さい直径の中間部を有し、前記ワッシャが、前記雄ねじの頭部の雄ねじ部側面と前記他方の部材との間に配されるとともに、該ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と前記雄ねじの頭部の直径よりも大きい外径とを有し、かつ、該ワッシャが所定の温度以上に加熱されると変形して該ワッシャの内径が前記雄ねじ頭部の直径と同等または該頭部の直径より大きくなることを特徴とする易分解締結組み立て品である。   In order to solve the above-described problem, the easily disassembled fastening assembly of the present invention has a male screw communicating hole formed in the female screw portion of one member having the female screw portion, as described in claim 1. An easily disassembling and fastening assembly comprising a member, wherein the male screw is provided with a step formed between the male screw part and a head having a diameter larger than that of the male screw part. An intermediate portion having a diameter larger than the outer diameter of the portion and smaller than the diameter of the head, and the washer is disposed between the male screw side surface of the male screw head and the other member; The washer has an inner diameter larger than a diameter of the middle portion of the male screw and smaller than a diameter of the head portion of the male screw and an outer diameter larger than a diameter of the head portion of the male screw, and the washer has a predetermined diameter. Heated above temperature Deformed and that is readily degradable fastening assembly, wherein the inner diameter of the washer is greater than the diameter of the diameter equal to or head portion of the male screw head.

また、本発明の易分解締結組み立て品は、請求項２に記載の通り、請求項１に記載の易分解締結組み立て品において前記ワッシャが形状記憶合金からなることを特徴とする。   Moreover, the easy-disassembly fastening assembly of the present invention is characterized in that, as described in claim 2, in the easy-disassembly fastening assembly according to claim 1, the washer is made of a shape memory alloy.

また、本発明の易分解締結組み立て品は、請求項３に記載の通り、請求項１または請求項２に記載の易分解締結組み立て品において、前記ワッシャがスプリングワッシャであることを特徴とする。   Moreover, the easy-disassembly fastening assembly of this invention is the easy-disassembly fastening assembly of Claim 1 or Claim 2 as described in Claim 3, The said washer is a spring washer, It is characterized by the above-mentioned.

さらに、本発明の易分解締結組み立て品は、請求項４に記載の通り、請求項１ないし請求項３のいずれかに記載の易分解締結組み立て品において、雄ねじ頭部が締結組み立て品表面より内部に埋め込まれていることを特徴とする。   Furthermore, the easy disassembly fastening assembly of the present invention is the easy disassembly fastening assembly according to any one of claims 1 to 3, wherein the male screw head is located inside the fastening assembly surface. It is embedded in.

また、本発明の易分解締結構造は、上記課題を解決するため、請求項５に記載のとおり、雌ねじ部を有する一方の部材の該雌ねじ部に、雄ねじとワッシャとにより、雄ねじ連通孔を有する他方の部材を組み付けてなる締結構造であって、前記雄ねじが雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きくかつ該頭部の直径よりも小さい直径の中間部を有し、前記ワッシャが前記雄ねじの頭部の雄ねじ部側面と前記他方の部材との間に配され、該ワッシャの外径が前記雄ねじ連通孔の内径よりも大きく、該ワッシャの内径が前記雄ねじの中間部の外径よりも大きくかつ該雄ねじの頭部の直径より小さく、かつ、該ワッシャが所定の温度以上に加熱されると変形して該ワッシャの内径が前記雄ねじ頭部の直径と同等または該頭部の直径より大きくなることを特徴とする易分解締結構造である。   Moreover, in order to solve the said subject, the easily disassembled fastening structure of this invention has an external thread communicating hole by an external thread and a washer in the internal thread part of one member which has an internal thread part as described in Claim 5. A fastening structure formed by assembling the other member, wherein the male screw is provided with a step formed between the male screw and a head having a larger diameter than the male screw. An intermediate portion having a diameter larger than the outer diameter and smaller than the diameter of the head, wherein the washer is disposed between a side surface of the male screw portion of the head of the male screw and the other member; The diameter is larger than the inner diameter of the male screw communication hole, the inner diameter of the washer is larger than the outer diameter of the middle part of the male screw and smaller than the diameter of the head of the male screw, and the washer is heated to a predetermined temperature or higher. When deformed It is a readily degradable fastening structure, wherein the inner diameter of the washer is greater than the diameter of the diameter equal to or head portion of the male screw head.

さらに、本発明の易分解締結構造は、請求項６に記載の通り、請求項５に記載の易分解締結構造において、前記ワッシャが形状記憶合金からなることを特徴とする。   Furthermore, the easy-disassembly fastening structure according to the present invention is characterized in that, in the easy-disassembly fastening structure according to claim 5, the washer is made of a shape memory alloy.

さらに、本発明の易分解締結構造は、請求項７に記載の通り、請求項５または請求項６に記載の易分解締結構造において、前記ワッシャがスプリングワッシャであることを特徴とする。   Furthermore, the easy-disassembly fastening structure of the present invention is characterized in that, as described in claim 7, in the easy-disassembly fastening structure according to claim 5 or 6, the washer is a spring washer.

本発明の易分解締結用雄ねじは、請求項８に記載の通り、上記請求項１ないし請求項４のいずれか１項の易分解締結組み立て品に用いるための易分解締結用雄ねじであって、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有する易分解締結用雄ねじである。   The male screw for easy disassembly fastening of the present invention is the male screw for easy disassembly fastening for use in the easy disassembly fastening assembly according to any one of claims 1 to 4, as described in claim 8. Between the male screw part and the head having a larger diameter than the male screw part, provided with a step with the male screw part, the outer diameter of the male screw part is larger and smaller than the diameter of the head part It is a male screw for easy disassembly fastening having an intermediate portion of the diameter.

本発明の易分解締結用のワッシャ付き雄ねじは、請求項９に記載の通り、雄ねじと環状ないし略環状のワッシャとからなり、前記雄ねじが、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有し、前記ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と、前記雄ねじの頭部の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が前記雄ねじの頭部の直径と同等または該頭部の直径より大きくなるものであって、かつ、前記雄ねじの中間部に前記変形前のワッシャが保持されていることを特徴とする易分解締結用のワッシャ付き雄ねじである。   The male screw with a washer for easy disassembly fastening according to the present invention comprises a male screw and an annular or substantially annular washer as claimed in claim 9, wherein the male screw has a male screw portion and a head having a larger diameter than the male screw portion. Between the male threaded portion and a step formed between the male threaded portion and an intermediate portion having a diameter larger than the outer diameter of the male threaded portion and smaller than the diameter of the head. It has an inner diameter that is larger than the diameter of the middle portion of the male screw and smaller than the diameter of the head portion of the male screw, and an outer diameter that is larger than the diameter of the head portion of the male screw and is deformed when heated to a predetermined temperature or higher. Easily disassembled, characterized in that the inner diameter is equal to or larger than the diameter of the head of the male screw, and the washer before deformation is held in the middle part of the male screw With a washer for fastening It is a male screw.

また、本発明の易分解締結用のワッシャ付き雄ねじは、請求項１０に記載の通り、請求項９に記載の易分解締結用のワッシャ付き雄ねじにおいて、前記ワッシャが形状記憶合金からなることを特徴とする。   The male screw with a washer for easy disassembly fastening according to the present invention is the male screw with a washer for easy disassembly fastening according to claim 9, wherein the washer is made of a shape memory alloy. And

また、本発明の易分解締結用のワッシャ付き雄ねじは、請求項１１に記載の通り、請求項９または請求項１０に記載の易分解締結用のワッシャ付き雄ねじにおいて、前記ワッシャがスプリングワッシャであることを特徴とする。   The male screw with a washer for easy disassembly fastening according to the present invention is the male screw with a washer for easy disassembly fastening according to claim 9 or 10, wherein the washer is a spring washer. It is characterized by that.

また、本発明の易分解締結用のワッシャ付き雄ねじは、請求項１２に記載の通り、請求項９ないし請求項１１のいずれか１項に記載の易分解締結用のワッシャ付き雄ねじにおいて、前記雄ねじの中間部側面の雄ねじ部側端またはその付近に、突出部が１つ以上設けられ、該突出部により該中間部に前記ワッシャが保持されていることを特徴とする。   The male screw with a washer for easy disassembly fastening according to the present invention is the male screw with a washer for easy disassembly fastening according to any one of claims 9 to 11, as defined in claim 12. One or more protrusions are provided at or near the male screw side end of the side surface of the intermediate part, and the washer is held in the intermediate part by the protrusions.

また、本発明の易分解締結用のワッシャ付き雄ねじは、請求項１３に記載の通り、請求項９ないし請求項１１のいずれか１項に記載の易分解締結用のワッシャ付き雄ねじにおいて、前記雄ねじの中間部の雄ねじ部側端またはその付近に、太径部が設けられ、該太径部により該中間部に前記ワッシャが保持されていることを特徴とする。   The male screw with a washer for easy disassembly fastening according to the present invention is the male screw with a washer for easy disassembly fastening according to any one of claims 9 to 11, as described in claim 13. A thick-diameter portion is provided at or near the end of the middle portion of the male screw portion, and the washer is held in the middle portion by the thick-diameter portion.

本発明の易分解締結用のワッシャ付き雄ねじの製造方法は、請求項１４に記載の通り、雄ねじと環状ないし略環状のワッシャとからなり、前記雄ねじが、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有し、前記ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と、前記雄ねじの頭部の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が前記雄ねじの頭部の直径と同等または該頭部の直径より大きくなるものであって、かつ、前記雄ねじの中間部に前記変形前のワッシャが保持されている易分解締結用のワッシャ付き雄ねじの製造方法であって、前記変形前のワッシャの孔に前記雄ねじを挿入し、該ワッシャを雄ねじの中間部に位置させた後、中間部の雄ねじ部側端部ないしその付近を少なくとも部分的に拡径させる拡径処理を行うことを特徴とする易分解締結用のワッシャ付き雄ねじの製造方法である。   The male screw with a washer for easy disassembly fastening according to the present invention comprises a male screw and an annular or substantially annular washer as claimed in claim 14, wherein the male screw has a diameter larger than the male screw part and the male screw part. An intermediate portion having a diameter larger than the outer diameter of the male screw portion and smaller than the diameter of the head portion, provided in a step with the male screw portion. Has an inner diameter larger than the diameter of the middle part of the male screw and smaller than the diameter of the head of the male screw, and an outer diameter larger than the diameter of the head of the male screw and heated to a predetermined temperature or higher. For easy disassembly fastening, the inner diameter of which is deformed to be equal to or larger than the diameter of the head of the male screw, and the washer before the deformation is held in the middle part of the male screw Male with washer The male screw is inserted into the hole of the washer before the deformation, and the washer is positioned at the middle part of the male screw, and then at least a part of the middle thread side end of the middle part or the vicinity thereof is at least partially. It is a manufacturing method of the male screw with a washer for easy disassembly fastening characterized by performing the diameter-expansion process which expands to diameter.

請求項１に記載の本発明の易分解締結組み立て品によれば、締結時の締め付けトルクの検出、制御が不要でありながら、確実な分解が可能である。このため、組み立てが容易になると共に、修理や点検、内部機器の増設・交換等でねじを外して、再組み立てする際にも、トルク制御のための機器が不要であるので、容易にかつ効率よく行うことができる。さらに、他方の部材の厚さが異なる場合にも中間部の長さを変えることで対応できる。   According to the easily disassembled fastening assembly according to the first aspect of the present invention, it is possible to perform reliable disassembly while detecting and controlling the tightening torque at the time of fastening. This facilitates assembly and eliminates the need for torque control equipment when removing and reassembling screws for repairs and inspections, expansion and replacement of internal equipment, etc. Can be done well. Further, even when the thickness of the other member is different, it can be dealt with by changing the length of the intermediate portion.

本発明の易分解締結組み立て品において、請求項２に記載の通り、請求項１に記載の易分解締結組み立て品において前記ワッシャが形状記憶合金から構成することにより、ワッシャの製造が容易となると共に、分解のための加熱によっても樹脂材、低融点金属とは異なり溶融することがないので、これら材料をもちいたワッシャで問題となる、分解後の他の部材への付着等の問題が発生せず、部品の分別が容易である。また、ワッシャとして係止部や接合部が不要となるので切れ目がある、スプリングワッシャ型の応用が可能となる。   In the easy-disassembly fastening assembly of the present invention, as described in claim 2, the washer is made of a shape memory alloy in the easy-disassembly fastening assembly according to claim 1, so that the washer can be easily manufactured. However, unlike resin materials and low-melting-point metals, it does not melt even when heated for decomposition, so problems such as adhesion to other components after decomposition that cause problems with washers using these materials can occur. Therefore, it is easy to separate parts. In addition, a spring washer type application is possible because there is no need for a locking part or a joining part as a washer.

請求項３に記載の本発明の易分解締結組み立て品によれば、上記ワッシャがスプリングワッシャであるので締結後のねじの緩みをも効果的に防止することができると共にワッシャ自体を、容易に、かつ、低コストで製造することができる。   According to the easily disassembled fastening assembly of the present invention as set forth in claim 3, since the washer is a spring washer, it is possible to effectively prevent loosening of the screw after fastening, and the washer itself can be easily And it can manufacture at low cost.

請求項４に記載の本発明の易分解締結組み立て品によれば、ねじが物品から飛び出していないため、物品の取り扱い性が向上すると共に、ねじ部が誤って加熱されることが少なくなるので、誤動作が防止される。   According to the easily disassembled fastening assembly of the present invention described in claim 4, since the screw does not protrude from the article, the handleability of the article is improved and the screw part is less likely to be heated by mistake. Malfunction is prevented.

請求項５に記載の本発明の易分解締結構造は、締結部材により組み立てられる物品に応用することにより、容易に、易分解締結組み立て品を得ることができるとともに、そのとき、締結時の締め付けトルクの検出、制御が不要でありながら、確実な分解が可能である。このため、組み立てが容易になると共に、修理や点検、内部機器の増設・交換等でねじを外して、再組み立てする際にも、トルク制御のための機器が不要であるので、容易に行うことができる。   The easily disassembled fastening structure of the present invention according to claim 5 can be easily obtained as an easily disassembled fastening assembly by applying it to an article assembled by a fastening member. It is possible to perform reliable disassembly without detecting and controlling the above. This makes it easy to assemble, and when removing and reassembling screws for repairs and inspections, expansion / replacement of internal equipment, etc. Can do.

さらに、請求項６に記載の本発明の易分解締結構造によれば、ワッシャの製造が容易となると共に、分解のための加熱によっても樹脂材、低融点金属とは異なり溶融することがないので、これら材料をもちいたワッシャで問題となる、分解後の他の部材への付着によるリサイクル性の低下等の問題が発生せず、分解後の部品の分別が容易な易分解締結組み立て品を得ることができる。   Furthermore, according to the easily disassembled fastening structure of the present invention as set forth in claim 6, the washer can be easily manufactured, and even when heated for disassembly, unlike the resin material and the low melting point metal, it is not melted. , Easy-to-disassemble fastening assembly that does not cause problems such as deterioration of recyclability due to adhesion to other parts after disassembly, which is a problem with washers using these materials, and allows easy separation of parts after disassembly be able to.

さらに請求項７に記載の本発明の易分解締結構造によれば、上記ワッシャがスプリングワッシャであるので締結後のねじの緩みをも効果的に防止することができると共にワッシャ自体を、容易に、かつ、低コストで製造することができるので、安価に優れた易分解締結組み立て品を得ることができる。   Furthermore, according to the easily disassembled fastening structure of the present invention described in claim 7, since the washer is a spring washer, it is possible to effectively prevent loosening of the screw after fastening, and the washer itself can be easily And since it can manufacture at low cost, the easily disassembled fastening assembly excellent in low cost can be obtained.

請求項８に記載の易分解締結用雄ねじによれば上記易分解締結構造及び易分解締結組み立て品を得ることができ、ねじ込みの時にその段部まで締めることにより、ミスのない、確実に分解する易分解締結組み立て品の組み立てを可能とすることができる。   According to the male screw for easy disassembly fastening according to claim 8, the easy disassembly fastening structure and the easy disassembly fastening assembly can be obtained, and it is reliably disassembled without any mistake by tightening to the stepped portion when screwing. It is possible to assemble an easily disassembled fastening assembly.

請求項９に記載の本発明の易分解締結組み立て品によれば、ワッシャが予め雄ねじの中間部にセットされているために、ねじ止め作業がきわめて容易であり、ワッシャのセット忘れもなく、迅速に行うことができる。この効果はねじ、ワッシャが小さい場合に特に大きい。   According to the easily disassembled fastening assembly of the present invention as set forth in claim 9, since the washer is set in advance in the middle portion of the male screw, the screwing operation is extremely easy and the forgetting to set the washer can be performed quickly. Can be done. This effect is particularly great when the screws and washers are small.

本発明の易分解締結組み立て品において、請求項１０に記載の通り、請求項９に記載の易分解締結組み立て品において前記ワッシャが形状記憶合金から構成することにより、ワッシャの製造が容易となると共に、分解のための加熱によっても樹脂材、低融点金属とは異なり溶融することがないので、これら材料をもちいたワッシャで問題となる、分解後の他の部材への付着等の問題が発生せず、部品の分別が容易である。また、ワッシャとして係止部や接合部が不要となるので切れ目がある、略環状のスプリングワッシャの応用が可能となる。   In the easily disassembled fastening assembly of the present invention, as described in claim 10, in the easily disassembled fastening assembly according to claim 9, the washer is made of a shape memory alloy, so that the washer can be easily manufactured. However, unlike resin materials and low-melting-point metals, it does not melt even when heated for decomposition, so problems such as adhesion to other components after decomposition that cause problems with washers using these materials can occur. Therefore, it is easy to separate parts. Moreover, since a latching part and a junction part become unnecessary as a washer, the application of a substantially annular spring washer with a break is possible.

請求項１１に記載の本発明の易分解締結組み立て品によれば、上記ワッシャがスプリングワッシャであるので締結後のねじの緩みをも効果的に防止することができると共にワッシャ自体を、容易に、かつ、低コストで製造することができる。   According to the easily disassembled fastening assembly of the present invention as set forth in claim 11, since the washer is a spring washer, it is possible to effectively prevent loosening of the screw after fastening, and the washer itself can be easily And it can manufacture at low cost.

請求項１２あるいは請求項１３に記載の本発明の易分解締結組み立て品によれば、構成が簡単であり、別部品も不要で、製造も容易であり、製造コストも安価となる。   According to the easily disassembled fastening assembly of the present invention described in claim 12 or claim 13, the structure is simple, no separate parts are required, the manufacture is easy, and the manufacturing cost is low.

請求項１４に記載の易分解締結組み立て品の製造方法によれば、構成が簡単であり、別部品も不要で、製造も容易であり、製造コストも安価となる。   According to the manufacturing method of the easily disassembled fastening assembly according to the fourteenth aspect, the configuration is simple, no separate parts are required, the manufacturing is easy, and the manufacturing cost is low.

本発明の易分解締結組み立て品について、その一例のモデル図を用いて説明する。図１には、雌ねじ部α１を有するインサート部材αを示す。   The easily disassembled fastening assembly of the present invention will be described with reference to an example model diagram. FIG. 1 shows an insert member α having a female screw portion α1.

インサート部材αはこの例では金属（鉄）から構成されており、台部α２を有する円錐台形状をしている。円錐台の側面にはインサート部材として成形物内に埋め込まれたときにその雌ねじ部を利用する締結作業時に成形物内でインサート部材αが回転してしまうことがないように、ひだ状の回転防止ひだα３がこの例では複数設けられている。   In this example, the insert member α is made of metal (iron) and has a truncated cone shape having a base α2. In order to prevent the insert member α from rotating in the molded product during the fastening operation using the female thread when it is embedded in the molded product as an insert member on the side surface of the truncated cone, A plurality of pleats α3 are provided in this example.

図２には雌ねじ部α１を有するインサート部材αがインサート成形に用いられ、インサート部材αの雌ねじ部α１の端面が成形品β（一方の部材）表面に露出するように成形されている状態を示す。なお、インサート部材αは成形品βの窪んだ部分である凹部β１に位置している。これは後述するように雄ねじεの頭部ε２が最終的に得られる締結組み立て品ζの表面から突出しないようにするためである。   FIG. 2 shows a state in which the insert member α having the female screw portion α1 is used for insert molding, and the end surface of the female screw portion α1 of the insert member α is molded so as to be exposed on the surface of the molded product β (one member). . Note that the insert member α is located in a recess β1 that is a recessed portion of the molded product β. This is to prevent the head ε2 of the male screw ε from protruding from the surface of the finally obtained fastening assembly ζ, as will be described later.

次に図２に示すように雌ねじ部α１を有するインサート部材αに、雄ねじ部のε１と雄ねじ部ε１より大きい直径を有する頭部ε２との間に、雄ねじ部ε１外径よりも大きく、かつ、頭部ε２の直径よりも小さい直径の中間部ε３を有する雄ねじεを用いて、雄ねじεの頭部ε２の直径と同等または頭部ε２の直径より大きい内径の雄ねじ連通孔γ１を有する他方の部材γを、外径が雄ねじ連通孔γ１の内径よりも大きく、内径が雄ねじεの頭部ε２の外径よりも小さい、この例では形状記憶合金からなるスプリングワッシャδを雄ねじεの頭部ε２の雄ねじ部側面と他方の部材γとの間に配して、締結する。   Next, as shown in FIG. 2, the insert member α having the female screw portion α1 is larger than the outer diameter of the male screw portion ε1 between the male screw portion ε1 and the head portion ε2 having a diameter larger than the male screw portion ε1, and The other member having the male screw communication hole γ1 having an inner diameter equal to or larger than the diameter of the head ε2 of the male screw ε by using the male screw ε having the intermediate portion ε3 having a diameter smaller than the diameter of the head ε2. γ is an outer diameter larger than the inner diameter of the male screw communication hole γ1, and the inner diameter is smaller than the outer diameter of the head ε2 of the male screw ε. In this example, a spring washer δ made of a shape memory alloy is used for the head ε2 of the male screw ε. It arrange | positions between a male screw part side surface and the other member (gamma), and fastens.

ここで、スプリングワッシャδ（その正面図を図３（ａ）に、側面図を図３（ｂ）に示す。）の内径は雄ねじεの中間部ε３の外径より大きく、頭部ε２の外径よりも小さい。   Here, the inner diameter of the spring washer δ (a front view thereof is shown in FIG. 3 (a) and a side view thereof is shown in FIG. 3 (b)) is larger than the outer diameter of the intermediate portion ε3 of the male screw ε. Smaller than the diameter.

ここでスプリングワッシャδは所定の温度以上に加熱されると変形してその内径が雄ねじεの頭部ε２の外径と同等または頭部ε２の外径より大きくなるものであれば良い。ここで、半円状などの開環した、略円環状の針金を、易溶融性金属や熱溶融性樹脂などを用いて閉環させて円環状に成形した、円環状のワッシャを用いても良いが、本例では逆変態開始温度（所定の温度）が、約１００℃である形状記憶合金からなるスプリングワッシャを用いる。   Here, the spring washer δ only needs to be deformed when heated to a predetermined temperature or more, and its inner diameter is equal to or larger than the outer diameter of the head ε2 of the male screw ε. Here, it is also possible to use an annular washer in which a semi-circular ring-opened, substantially annular wire is closed by using an easily meltable metal, a heat-meltable resin, or the like to form an annular shape. However, in this example, a spring washer made of a shape memory alloy having a reverse transformation start temperature (predetermined temperature) of about 100 ° C. is used.

他方の部材γの、成形品βの凹部β１に対応する部分には、凸部γ２が設けられ、他方の部材γの他方の面には凹部γ３が設けられている。さらにこれら凸部γ２及び凹部γ３の中央には、これらを連通する雄ねじ連通孔γ１が設けられている。   A convex portion γ2 is provided on a portion of the other member γ corresponding to the concave portion β1 of the molded product β, and a concave portion γ3 is provided on the other surface of the other member γ. Furthermore, a male screw communication hole γ1 is provided in the center of the convex portion γ2 and the concave portion γ3 to communicate them.

締結作業は雌ねじ部α１に対して雄ねじεの雄ねじ部ε１がねじ込めるまで行う。雄ねじεのねじ込み最終位置はねじ部のない中間部ε３によって、決定されるので、トルク管理を行わずにねじ込み可能な位置までねじ込むことにより安定したねじ込み位置管理が可能である。なお、中間部ε３の長さは、他方の部材γの雄ねじ連通孔γ１付近の厚さとスプリングワッシャδの厚さとを勘案して適切なものとする。このように、他方の部材γの雄ねじ連通孔γ１付近の厚さに応じて中間部ε３の長さを選択することにより、本発明の効果を損なうことなく、様々な厚さに対応できる。   The fastening operation is performed until the male screw portion ε1 of the male screw ε is screwed into the female screw portion α1. Since the final screwing position of the male screw ε is determined by the intermediate portion ε3 without the screw portion, stable screwing position management is possible by screwing to the screwable position without performing torque management. Note that the length of the intermediate portion ε3 is appropriate in consideration of the thickness of the other member γ in the vicinity of the male screw communication hole γ1 and the thickness of the spring washer δ. Thus, by selecting the length of the intermediate portion ε3 according to the thickness of the other member γ in the vicinity of the male screw communication hole γ1, various thicknesses can be handled without impairing the effects of the present invention.

図４には、締結終了後の状態を示すモデル断面図を示す。このとき、締結後には雄ねじεの頭部ε２は締結組み立て品ζの表面から突出しないようになっていることがわかる。   In FIG. 4, the model cross section which shows the state after completion | finish of fastening is shown. At this time, it can be seen that the head ε2 of the male screw ε does not protrude from the surface of the fastening assembly ζ after fastening.

図５（ａ）には、スプリングワッシャδが所定の温度以上に加熱されて変形し、スプリングワッシャδの内径が雄ねじεの頭部ε２の外径より大きくなり、その結果雄ねじεによる締結が無効となり、その結果、他方の部材γの雄ねじ連通孔γ１が雄ねじε頭部ε２から外れた状態を示す。   In FIG. 5 (a), the spring washer δ is heated and deformed to a predetermined temperature or more, and the inner diameter of the spring washer δ becomes larger than the outer diameter of the head ε2 of the male screw ε. As a result, the fastening by the male screw ε is invalid. As a result, the male screw communication hole γ1 of the other member γ is disengaged from the male screw ε head ε2.

また、図５（ｂ）には、スプリングワッシャδが所定の温度以上に加熱されて変形し、スプリングワッシャδの内径が雄ねじε頭部ε２の外径より大きくなった状態を示す正面図である。   FIG. 5B is a front view showing a state in which the spring washer δ is heated and deformed to a predetermined temperature or more, and the inner diameter of the spring washer δ is larger than the outer diameter of the male screw ε head ε2. .

なお、上記のようなスプリングワッシャδの加熱は、締結組み立て品ζ全体を加熱炉の中に導入したり、あるいは、温水や温油の中に導入するなど、締結組み立て品ζ全体を加熱することにより、あるいは、スプリングワッシャδ付近を「こて」などで直接加熱する、あるいは、温風、蒸気などで部分的に加熱することにより容易に実施することができる。   In addition, the heating of the spring washer δ as described above is to heat the entire fastening assembly ζ such as introducing the entire fastening assembly ζ into a heating furnace or introducing it into hot water or hot oil. Or by directly heating the vicinity of the spring washer δ with a “trowel” or the like, or partially heating with hot air, steam, or the like.

上記のように、本発明の易分解締結組み立て品では、雄ねじ部と雄ねじ部より大きい直径を有する頭部との間に、雄ねじ部と段差を形成して設けられた、雄ねじ部外径よりも大きく、かつ、頭部の直径よりも小さい直径の中間部ε３を有する雄ねじを用いるので、中間部ε３は雄ねじ部と段差があり、この段差まで、すなわち、ねじ込み可能な位置までねじ込めば良く、このとき、段差によりそれ以上のねじ込みが防止されているので、ワッシャには不必要な強い力がかからない。このため、ワッシャが変形して開いてしまって不用意に分解してしまう、あるいは、ワッシャが一方の部材や他方の部材に食い込んで、動作不良を起こすなどのおそれが予め防止されている。   As described above, in the easily disassembled fastening assembly of the present invention, the male screw part and the head having a larger diameter than the male screw part are provided with a step difference between the male screw part and the outer diameter of the male screw part. Since a male screw having an intermediate part ε3 having a diameter larger than the diameter of the head is used, the intermediate part ε3 has a step with the male screw part, and it is only necessary to screw up to this step, that is, to a screwable position. At this time, since the screw is prevented from being further screwed by the step, unnecessary strong force is not applied to the washer. For this reason, the possibility that the washer is deformed and opened to be inadvertently disassembled, or that the washer bites into one member or the other member to cause malfunction is prevented in advance.

また、ワッシャに上記のように予想外の強い力がかかることがないので、従来技術で用いられていたねじ付属品に設けられていた係止構造（図１２及び１４参照）が不要となり、製造が容易となって、低コストとなる。さらに、上記のように雄ねじはねじ込み可能な位置までねじ込めば良いので、ねじ込み完了が明確に判定できるため、動作不良が生じる恐れも防止されている。   In addition, since the washer is not subjected to unexpectedly strong force as described above, the locking structure (see FIGS. 12 and 14) provided in the screw accessory used in the prior art becomes unnecessary, and the washer is manufactured. Becomes easier and lower in cost. Furthermore, since the male screw only needs to be screwed to a position where it can be screwed as described above, the completion of screwing can be clearly determined, thereby preventing the possibility of malfunction.

また、このとき、ワッシャを形状記憶合金から構成することにより、係止部や接合部がない、切れ目がある構造が可能となるのでスプリングワッシャ型のねじ付属品とすることが可能となり、さらにこのとき、スプリングワッシャの機能、即ち、ねじ緩み防止効果をあわせて持たせることができる。また、熱溶融材料を用いなくても機能するため、熱溶融材料の他の部材への付着によるリサイクル性の低下のおそれが予め防止されている。   Also, at this time, by constructing the washer from a shape memory alloy, it becomes possible to provide a spring washer-type screw accessory because there is a structure without a locking portion or a joining portion and a cut. Sometimes, the function of the spring washer, that is, the effect of preventing screw loosening can be provided. Moreover, since it functions without using a hot melt material, the possibility of a decrease in recyclability due to adhesion of the hot melt material to other members is prevented in advance.

なお、上記例では、雌ねじはインサート部材αに設けたが、一方の部材に直接雌ねじ部を設ける、あるいは、雄ねじの雄ねじ部としてタッピングねじ部とするなどの方法によれば、インサート部材αは不要となるが、この場合も本発明に含まれる。   In the above example, the female screw is provided on the insert member α. However, according to a method such as providing a female screw portion directly on one member or using a tapping screw portion as the male screw portion of the male screw, the insert member α is not required. This case is also included in the present invention.

また、上記例においては頭部ε２は円盤状のものとしたが、変形前のワッシャが抜けなければその形状は種々選択でき、例えば六角形盤状等としても良い（以下の例でも同様）。   In the above example, the head ε2 has a disk shape, but the shape can be variously selected as long as the unwashed washer is not removed. For example, a hexagonal disk shape may be used (the same applies to the following examples).

上記例では、締結時に締結作業者がワッシャと雄ねじとを組み合わせる作業を行うが、この作業は両手で行う必要があり手間がかかる。ワッシャのセット忘れの可能性もあり、また、ワッシャが被締結機器内部に落ち、回収の手間などが必要になるなどの問題があり、また作業者がワッシャの落下に気付かなかった場合には機器の故障などの原因になるおそれがある。このような問題はねじ、ワッシャが小さい場合に特に生じやすい。   In the above example, the fastening operator performs the work of combining the washer and the male screw at the time of fastening. However, this work needs to be done with both hands, which is troublesome. There is a possibility that the washer may be forgotten to be set, and there is a problem that the washer falls inside the fastened device and requires troublesome collection, etc. In addition, if the worker does not notice the washer falling, the device There is a risk of malfunction. Such problems are particularly likely to occur when the screws and washers are small.

ここで、このような問題発生を未然に防止することができる、易分解締結用のワッシャ付き雄ねじＡの例についてモデル図を用いて説明する。   Here, an example of a male screw A with a washer for easy disassembly fastening that can prevent such a problem from occurring will be described using a model diagram.

図６に示された易分解締結用のワッシャ付き雄ねじＡは雄ねじε’とワッシャδとからなり、雄ねじε’が雄ねじ部ε１’（タッピングねじ。本例では外径２．５ｍｍ）とこの雄ねじ部ε１’より大きい直径を有する頭部ε２’（本例では直径４．５ｍｍ）との間に、雄ねじ部ε１’と段差ε３２’を形成して設けられた、雄ねじ部ε１’外径よりも大きく、かつ、頭部ε２’の直径よりも小さい直径の中間部ε３’（本例では３．５ｍｍ）を有し、ワッシャδは、雄ねじε’の中間部ε３’の直径よりも大きくかつ雄ねじε’の頭部ε２’の直径より小さい内径（本例では
３．６ｍｍ）と、雄ねじε’の頭部ε２’の直径よりも大きい外径（本例では５．９ｍｍ）とを有するとともに所定の温度以上に加熱されると変形して内径が雄ねじε’の頭部ε２’の直径と同等または頭部ε２’の直径より大きくなるものであって、かつ、雄ねじε’の中間部ε３’に変形前のワッシャδが保持されている。 The male screw A with a washer for easy disassembly shown in FIG. 6 is composed of a male screw ε ′ and a washer δ. The male screw ε ′ is a male screw portion ε1 ′ (in this example, an outer diameter of 2.5 mm) and this male screw. Than the outer diameter of the male screw portion ε1 ′ provided by forming a male screw portion ε1 ′ and a step ε32 ′ between the head portion ε2 ′ having a larger diameter than the portion ε1 ′ (in this example, a diameter of 4.5 mm). An intermediate portion ε3 ′ (3.5 mm in this example) having a diameter that is larger and smaller than the diameter of the head ε2 ′, and the washer δ is larger than the diameter of the intermediate portion ε3 ′ of the male screw ε ′ and the male screw It has an inner diameter (3.6 mm in this example) smaller than the diameter of the head ε2 ′ of ε ′ and an outer diameter (5.9 mm in this example) larger than the diameter of the head ε2 ′ of the male screw ε ′. When heated to a temperature higher than or equal to the diameter of the head ε2 ′ of the male screw ε ′, or the head ε 'It is those larger than the diameter of, and the male screw epsilon' washer before deformation in the intermediate portion .epsilon.3 'of δ is held.

さらに、このワッシャδは形状記憶合金からなり、かつ、スプリングワッシャ（略環状）である。   Further, this washer δ is made of a shape memory alloy and is a spring washer (substantially annular).

また、雄ねじε’の中間部ε３’側面の雄ねじ部ε１’側端に、突出部ε３１’がこの例では６つ設けられ、これら突出部ε３１’により中間部ε３’からワッシャδが抜けないように保持されているので、運送や組み立て等の通常の取り扱い等によってワッシャδが中間部ε３’から失われることはないが、ワッシャδの雄ねじε’に対して自由に回転できるために、雄ねじε’のねじ込みに際してはワッシャδがその妨げとなることはない。   In addition, in this example, six protrusions ε31 ′ are provided at the end of the male screw ε ′ on the side of the middle part ε3 ′ of the male part ε3 ′ so that the washer δ does not come off from the intermediate part ε3 ′ by these protrusions ε31 ′. Therefore, the washer δ is not lost from the intermediate portion ε3 ′ by normal handling such as transportation or assembly, but the male screw ε can be freely rotated with respect to the male screw ε ′ of the washer δ. The washer δ does not interfere with the screwing of '.

図７（ａ）にはワッシャδの正面図（モデル拡大図）、図２（ｂ）には側面図（モデル拡大図）を示す。ワッシャδはＴｉ−Ｎｉ合金（両者の分子存在比はほぼ等しい）からなり、この例では１００℃付近の所定温度（逆変態開始温度）以上に加熱されると拡径する。ワッシャδを構成する線材の断面は円ではなく、両底面（図２（ａ）の正面側面とその反対の面）は平面ないし曲率の大きい緩やかな曲面となっている。このため、雄ねじε’により被締結部材が締結されたときの被締結部材との接触面積が大きいので、従来技術のように円環座金（図１４の符号１５）なしでも、ワッシャδの被締結部材表面への食い込みが生じにくい。このために、所定の温度以上に加熱された際のワッシャδの変形（拡径変形）が妨げられにくくなっていて、加熱されれば容易に拡径できるために、易分解組み立て体としての機能が確実に発揮される。   7A shows a front view (model enlarged view) of the washer δ, and FIG. 2B shows a side view (model enlarged view). The washer δ is made of a Ti—Ni alloy (both molecular abundance ratios are substantially equal). In this example, the diameter of the washer δ expands when heated to a predetermined temperature near 100 ° C. (reverse transformation start temperature). The cross section of the wire constituting the washer δ is not a circle, and both bottom surfaces (the front side surface in FIG. 2 (a) and the opposite surface) are flat or gently curved with a large curvature. For this reason, since the contact area with the member to be fastened when the member to be fastened is fastened by the male screw ε ′ is large, the washer δ is fastened without a ring washer (reference numeral 15 in FIG. 14) as in the prior art. Biting into the member surface is difficult to occur. For this reason, the deformation (expansion deformation) of the washer δ when heated to a predetermined temperature or more is not hindered, and the diameter can be easily increased if heated. Is surely demonstrated.

このような易分解締結用のワッシャ付き雄ねじＡは上述した図２における雄ねじεとワッシャδと置き換えて全く同様に用いることができ（ただし易分解締結用のワッシャ付き雄ねじＡの雄ねじ部ε１はタッピングねじであるので、インサートαは不要で、成形品βに雌ねじ成形用の孔が形成されていればよい）、そのとき、組み立てが容易かつ迅速となり、ワッシャの紛失やセット忘れなどの問題が、予め防止されている。   Such a male screw A with a washer for easy disassembly fastening can be used in the same manner by replacing the male screw ε and washer δ in FIG. 2 described above (however, the male screw portion ε1 of the male screw A with washer for easy disassembly fastening is tapping. Since it is a screw, the insert α is not necessary, and it is only necessary to form a female thread forming hole in the molded product β). At that time, assembly becomes easy and quick, and problems such as loss of the washer and forgetting to set, It is prevented in advance.

ここで、上記易分解締結組み立て品における、雄ねじε’の中間部ε３’に変形前のワッシャを保持させる方法について図８（ａ）〜図８（ｃ）を用いて説明する。   Here, a method of holding the washer before deformation in the intermediate part ε3 ′ of the male screw ε ′ in the easily disassembled fastening assembly will be described with reference to FIGS. 8A to 8C.

図８（ａ）に示すように、雄ねじ部ε１’とこの雄ねじ部ε１’より大きい直径を有する頭部ε２’との間に、雄ねじ部ε１’と段差を形成して設けられた雄ねじ部ε１’の外径よりも大きく、かつ、頭部ε２’の直径よりも小さい直径の中間部ε３’を有する雄ねじε’と、雄ねじε’の中間部ε３’の直径よりも大きく、かつ、雄ねじε’の頭部ε２’の直径より小さい内径と、雄ねじε’の頭部ε２’の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が雄ねじε’の頭部ε２’の直径と同等または頭部ε２’の直径より大きくなる、形状記憶合金からなるスプリングワッシャ（変形前）δとを準備し、スプリングワッシャδの孔に雄ねじε’の雄ねじ部ε１’を挿入して、スプリングワッシャδが中間部ε３’に位置するようにする（図８（ｂ）参照）。   As shown in FIG. 8 (a), a male screw portion ε1 provided with a step difference between the male screw portion ε1 ′ and a head portion ε2 ′ having a diameter larger than the male screw portion ε1 ′. A male screw ε ′ having an intermediate portion ε3 ′ having a diameter larger than the outer diameter of the head ε2 ′ and a diameter smaller than the diameter of the head ε2 ′, and a diameter larger than the diameter of the intermediate portion ε3 ′ of the male screw ε ′. It has an inner diameter smaller than the diameter of the head ε2 'and an outer diameter larger than the diameter of the head ε2' of the male screw ε ', and is deformed when heated to a predetermined temperature or higher, so that the inner diameter of the male screw ε' A spring washer (before deformation) δ made of a shape memory alloy, which is equal to or larger than the diameter of the head ε2 ′, is prepared, and a male screw portion ε1 ′ of the male screw ε ′ is formed in the hole of the spring washer δ. And the spring washer δ is inserted into the middle part ε3 ′. It is made to position (refer FIG.8 (b)).

次いで、雄ねじε’の中間部ε３’と雄ねじ部ε１’との間の段差部の雄ねじ部ε１’側面に先端がとがった、たがねηを強く押しつける、あるいは、たがねηを打ち付けることにより（図８（ｃ）参照）、中間部ε３’の雄ねじ部ε１’側端を部分的（この例では６箇所）に拡径させる拡径処理を行って、突出部ε３１’を形成させて、上記のような易分解締結組み立て品を得ることができる。   Next, the tip of the stepped portion between the middle portion ε3 ′ of the male screw ε ′ and the male screw portion ε1 ′ is pointed at the side of the male screw portion ε1 ′, or strongly presses the chisel η, or strikes the chisel η. (See FIG. 8C), a diameter expansion process is performed to expand the diameter of the end portion of the intermediate thread ε3 ′ on the side of the male thread ε1 ′ partially (six locations in this example) to form the protrusion ε31 ′. An easily disassembled fastening assembly as described above can be obtained.

次に、易分解締結組み立て品の他の例について図９（ａ）にそのモデル図を示す。   Next, FIG. 9A shows a model diagram of another example of an easily disassembled fastening assembly.

易分解締結組み立て品は、雄ねじε”とワッシャδとからなり、雄ねじε”が雄ねじ部ε１”とこの雄ねじ部ε１”より大きい直径を有する頭部ε２”との間に、雄ねじ部ε１”と段差ε３２”を形成して設けられた雄ねじ部ε１”と段差ε３２”を形成して設けられた、雄ねじ部ε１”外径よりも大きく、かつ、頭部ε２”の直径よりも小さい直径の中間部ε３”を有し、前記ワッシャδは、雄ねじε”の中間部ε３”の直径よりも大きくかつ雄ねじε”の頭部ε２”の直径より小さい内径と、雄ねじε”の頭部ε２”の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が雄ねじε”の頭部ε２”の直径と同等または頭部ε２”の直径より大きくなるものであって、かつ、雄ねじε”の中間部ε３”に変形前のワッシャδが保持されている易分解締結組み立て品であり、ワッシャδは同じ符号の上記ワッシャδと共通で同じものである。   The easily disassembled fastening assembly includes a male screw ε ″ and a washer δ. The male screw ε ″ is between the male screw ε1 ″ and the head ε2 ″ having a diameter larger than the male screw ε1 ″. An intermediate between the male screw portion ε1 ″ provided with the step ε32 ″ and the outer diameter of the male screw portion ε1 ″ provided with the step ε32 ″ and smaller than the diameter of the head ε2 ″. The washer δ is larger in diameter than the middle portion ε3 ″ of the male screw ε ″ and smaller in diameter than the head ε2 ″ of the male screw ε ″ and the head ε2 ″ of the male screw ε ″. The outer diameter is larger than the diameter and is deformed when heated to a predetermined temperature or higher, so that the inner diameter is equal to or larger than the diameter of the head ε2 ″ of the male screw ε ″. And a washer δ before deformation in the middle part ε3 ″ of the male screw ε ″. Is an easily disassembled fastened assembly product, and the washer δ is the same as the washer δ having the same symbol.

ここで雄ねじε”の中間部ε３”の雄ねじ部ε１”側端の付近に、太径部ε３１”が設けられており、太径部ε３１”の外径はワッシャδの内径に比べわずかに大きく（かつ、雄ねじα頭部ε２”の直径より小さい）、この太径部ε３１”により中間部ε３”にワッシャδが保持されている。   Here, a large diameter portion ε31 ″ is provided in the vicinity of the male screw portion ε1 ″ side end of the middle portion ε3 ″ of the male screw ε ″, and the outer diameter of the large diameter portion ε31 ″ is slightly larger than the inner diameter of the washer δ. The washer δ is held in the intermediate portion ε3 ″ by this large diameter portion ε31 ″ (and smaller than the diameter of the male screw α head ε2 ″).

図９（ｂ）には中間部ε３”にワッシャδが保持される前の状態を示すモデル図であり、ワッシャ（スプリングワッシャ）δの孔に雄ねじε”の雄ねじ部ε１”を挿入して、ワッシャδが太径部ε３１”に当接するよう（図９（ｃ）参照）にした後、図示しないジグ等によりワッシャδを図９（ｃ）中の矢印方向に押しつつ弾性変形させて中間部ε３へ移動させ、本発明に係る易分解締結組み立て品を得ることができる。   FIG. 9B is a model diagram showing a state before the washer δ is held in the intermediate portion ε3 ″. The male screw portion ε1 ″ of the male screw ε ″ is inserted into the hole of the washer (spring washer) δ, After the washer δ is in contact with the large diameter portion ε31 ″ (see FIG. 9C), the washer δ is elastically deformed while being pushed in the direction of the arrow in FIG. By moving to ε3, an easily disassembled fastening assembly according to the present invention can be obtained.

なお、この例Ｂでは雄ねじε”の雄ねじ部ε１”はタッピングねじではなく、通常のねじであり、このため、上述した図２における雄ねじεとワッシャδと置き換えて全く同様に用いることができ、そのとき、組み立てが容易かつ迅速となり、ワッシャの紛失やセット忘れなどの問題が、予め防止されている。   In this example B, the male screw portion ε1 ″ of the male screw ε ″ is not a tapping screw but a normal screw. Therefore, the male screw ε and the washer δ in FIG. 2 described above can be used in exactly the same manner. At that time, assembly becomes easy and quick, and problems such as loss of a washer and forgetting to set are prevented in advance.

本発明の実施例で用いる雌ねじ部α１を有するインサート部材αのモデル断面図である。It is model sectional drawing of insert member (alpha) which has internal thread part (alpha) 1 used in the Example of this invention. 雌ねじ部α１を有するインサート部材αがインサートとして成形に用いられ、インサート部材αの雌ねじ部α１が成形品β（一方の部材）表面に露出するように成形されている状態を示すモデル断面図である。It is a model sectional view showing a state where insert member α having internal thread portion α1 is used for molding as an insert, and internal thread portion α1 of insert member α is molded to be exposed on the surface of molded product β (one member). . スプリングワッシャδを示すモデル図である。（ａ）正面図。（ｂ）側面図。FIG. 6 is a model diagram showing a spring washer δ. (A) Front view. (B) Side view. 易分解締結組み立て品の組み立て後の状態を示すモデル断面図である。It is model sectional drawing which shows the state after the assembly of an easily disassembled fastening assembly. 易分解締結組み立て品のスプリングワッシャδが加熱されて、分解した状態を示すモデル図である。（ａ）図３に相当する部分のモデル断面図である。（ｂ）加熱後のスプリングワッシャδを示す正面図である。It is a model figure which shows the state which the spring washer (delta) of the easily disassembled fastening assembly was heated and disassembled. (A) It is model sectional drawing of the part corresponded in FIG. (B) It is a front view which shows the spring washer (delta) after a heating. 本発明に係る易分解締結用のワッシャ付き雄ねじＡを示すモデル図である。It is a model figure which shows the male screw A with a washer for the easy decomposition | disassembly fastening which concerns on this invention. スプリングワッシャδを示すモデル図である。（ａ）正面図。（ｂ）側面図。FIG. 6 is a model diagram showing a spring washer δ. (A) Front view. (B) Side view. 本発明に係る易分解締結組み立て品Ａにおける、雄ねじε’の中間部ε３’変形前のワッシャβを保持させる方法についての説明図である。（ａ）保持前の雄ねじ部ε１’とワッシャδを示すモデル図である。（ｂ）中間部ε３’にワッシャδをセットした状態を示すモデル図である。（ｃ）中間部ε３’の雄ねじ部ε１’側端に突出部ε３１’を形成させている状態を示すモデル図である。It is explanatory drawing about the method to hold | maintain the washer (beta) before the intermediate part (epsilon) 3 'deformation | transformation of the external thread (epsilon)' in the easily disassembled fastening assembly A which concerns on this invention. (A) It is a model figure which shows the external thread part (epsilon) 1 'and washer (delta) before holding | maintenance. (B) It is a model figure which shows the state which set the washer (delta) to intermediate part (epsilon) 3 '. (C) It is a model figure which shows the state which has formed protrusion part (epsilon) 31 'in the external thread part (epsilon) 1' side end of intermediate part (epsilon) 3 '. 本発明に係る易分解締結組み立て品の他の例について説明する図である。（ａ）易分解締結組み立て品を示すモデル図である。（ｂ）保持前の雄ねじε”とワッシャδを示すモデル図である。（ｃ）ワッシャδが雄ねじε”の太径部ε３１”に当接した状態を示すモデル図である。It is a figure explaining the other example of the easily disassembled fastening assembly based on this invention. (A) It is a model figure which shows an easily disassembled fastening assembly. (B) Model diagram showing male screw ε ″ and washer δ before holding. (C) Model diagram showing a state where washer δ is in contact with a large diameter portion ε31 ″ of male screw ε ″. 従来技術に係る、所定の温度以上に加熱するとねじによる締結が無効となる易分解締結部によって組み立てられた物品の一例の易分解締結部付近の部分拡大断面図である。It is a partial expanded sectional view of the easily disassembled fastening part vicinity of an example of the articles | goods assembled by the easily disassembled fastening part which the fastening by a screw becomes invalid when it heats more than predetermined temperature based on a prior art. 図１０のＫで示された部分のさらなる部分拡大断面図である。It is the further partial expanded sectional view of the part shown by K of FIG. 従来用いられていたねじ付属品１０を示す図である（ａ）正面図（ｂ）側面図It is a figure showing screw accessory 10 used conventionally. (A) Front view (b) Side view 図１０に該当する部分の易分解締結部が加熱された結果、ねじによる締結が無効となった状態を示す部分拡大断面図である。It is the elements on larger scale which show the state where the fastening by a screw became invalid as a result of heating the easily disassembled fastening part of the part applicable to FIG. 加熱されて拡径したねじ付属品１０の正面図である。It is a front view of the screw accessory 10 which was heated and expanded in diameter.

符号の説明Explanation of symbols

Ａ、Ｂ 易分解締結用のワッシャ付き雄ねじ
α インサート部材
α１ 雌ねじ部
α２ 台部
α３ 回転防止ひだ
β 成形品（一方の部材）
β１ 凹部
γ 他方の部材
γ１ 雄ねじ連通孔
δ スプリングワッシャ
ε、ε’、ε” 雄ねじ
ε１、ε１’、ε１” 雄ねじ部
ε２、ε２’、ε２” 頭部
ε３、ε３’、ε３” 中間部
ε３１’ 突出部
ε３１” 太径部 A, B Male screw with washer for easy disassembly fastening α Insert member α1 Female screw part α2 Base part α3 Anti-rotation pleat β Molded product (one member)
β1 Concave γ Other member γ1 Male thread communication hole δ Spring washer ε, ε ′, ε ″ Male thread ε1, ε1 ′, ε1 ″ Male thread portion ε2, ε2 ′, ε2 ″ Head portion ε3, ε3 ′, ε3 ”Intermediate portion ε31 ′ Protruding part ε31 ”large diameter part

Claims (14)

雌ねじ部を有する一方の部材の該雌ねじ部に、雄ねじとワッシャとにより、雄ねじ連通孔を有する他方の部材を組み付けてなる易分解締結組み立て品であって、
前記雄ねじが雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きくかつ該頭部の直径よりも小さい直径の中間部を有し、
前記ワッシャが、前記雄ねじの頭部の雄ねじ部側面と前記他方の部材との間に配されるとともに、該ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と前記雄ねじの頭部の直径よりも大きい外径とを有し、かつ、
該ワッシャが所定の温度以上に加熱されると変形して該ワッシャの内径が前記雄ねじ頭部の直径と同等または該頭部の直径より大きくなることを特徴とする易分解締結組み立て品。 An easily disassembled fastening assembly product in which the other member having the male screw communication hole is assembled to the female screw portion of the one member having the female screw portion by the male screw and the washer,
The male screw is provided between the male screw part and a head having a larger diameter than the male screw part, and is provided to form a step with the male screw part, and is larger than the outer diameter of the male screw part and larger than the diameter of the head part. Having a small diameter middle part,
The washer is disposed between the male screw side surface of the male screw head and the other member, and the washer is larger than the diameter of the middle part of the male screw and larger than the diameter of the male screw head. Having a small inner diameter and an outer diameter larger than the diameter of the head of the male screw, and
An easily disassembled fastening assembly characterized in that when the washer is heated to a predetermined temperature or more, the washer is deformed so that the inner diameter of the washer is equal to or larger than the diameter of the male screw head. 前記ワッシャが形状記憶合金からなることを特徴とする請求項１に記載の易分解締結組み立て品。   The easily disassembled fastening assembly according to claim 1, wherein the washer is made of a shape memory alloy. 前記ワッシャがスプリングワッシャであることを特徴とする請求項１または請求項２に記載の易分解締結組み立て品。   The easily disassembled fastening assembly according to claim 1 or 2, wherein the washer is a spring washer. 前記締結組み立て品において、雄ねじ頭部が締結組み立て品表面より内部に埋め込まれていることを特徴とする請求項１ないし請求項３のいずれかに記載の易分解締結組み立て品。   The easily disassembled fastening assembly according to any one of claims 1 to 3, wherein in the fastening assembly, a male screw head is embedded inside the fastening assembly surface. 雌ねじ部を有する一方の部材の該雌ねじ部に、雄ねじとワッシャとにより、雄ねじ連通孔を有する他方の部材を組み付けてなる締結構造であって、
前記雄ねじが雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きくかつ該頭部の直径よりも小さい直径の中間部を有し、
前記ワッシャが前記雄ねじの頭部の雄ねじ部側面と前記他方の部材との間に配され、該ワッシャの外径が前記雄ねじ連通孔の内径よりも大きく、該ワッシャの内径が前記雄ねじの中間部の外径よりも大きくかつ該雄ねじの頭部の直径より小さく、かつ、
該ワッシャが所定の温度以上に加熱されると変形して該ワッシャの内径が前記雄ねじ頭部の直径と同等または該頭部の直径より大きくなることを特徴とする易分解締結構造。 A fastening structure in which the other member having the male screw communication hole is assembled to the female screw portion of the one member having the female screw portion by a male screw and a washer,
The male screw is provided between the male screw part and a head having a larger diameter than the male screw part, and is provided to form a step with the male screw part, and is larger than the outer diameter of the male screw part and larger than the diameter of the head part. Having a small diameter middle part,
The washer is arranged between the male screw side surface of the head of the male screw and the other member, the outer diameter of the washer is larger than the inner diameter of the male screw communication hole, and the inner diameter of the washer is an intermediate portion of the male screw Larger than the outer diameter of the male screw and smaller than the diameter of the head of the male screw, and
An easily disassembled fastening structure, wherein the washer is deformed when heated to a predetermined temperature or more and an inner diameter of the washer is equal to or larger than a diameter of the male screw head. 前記ワッシャが形状記憶合金からなることを特徴とする請求項５に記載の易分解締結構造。   6. The easily disassembled fastening structure according to claim 5, wherein the washer is made of a shape memory alloy. 前記ワッシャがスプリングワッシャであることを特徴とする請求項５または請求項６に記載の易分解締結構造。   The easily disassembled fastening structure according to claim 5 or 6, wherein the washer is a spring washer. 上記請求項１ないし請求項４のいずれか１項の易分解締結組み立て品に用いるための易分解締結用雄ねじであって、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有する易分解締結用雄ねじ。   An easily disassembled fastening male screw for use in the easily disassembled fastening assembly according to any one of claims 1 to 4, wherein the male screw part and a head having a larger diameter than the male screw part are provided. A male screw for easy disassembly fastening having an intermediate part having a diameter larger than the outer diameter of the male screw part and smaller than the diameter of the head, provided in a step with the male screw part. 雄ねじと環状ないし略環状のワッシャとからなり、
前記雄ねじが、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有し、
前記ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と、前記雄ねじの頭部の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が前記雄ねじの頭部の直径と同等または該頭部の直径より大きくなるものであって、かつ、
前記雄ねじの中間部に前記変形前のワッシャが保持されていることを特徴とする易分解締結用のワッシャ付き雄ねじ。 It consists of a male screw and an annular or substantially annular washer,
The male screw is larger than the outer diameter of the male screw portion provided in a step with the male screw portion between the male screw portion and a head having a larger diameter than the male screw portion, and Having an intermediate portion with a diameter smaller than the diameter,
The washer has an inner diameter that is larger than the diameter of the middle portion of the male screw and smaller than the diameter of the head portion of the male screw, and an outer diameter that is larger than the diameter of the head portion of the male screw, and is heated to a predetermined temperature or higher. Then, the inner diameter is deformed to be equal to or larger than the diameter of the head of the male screw, and
A male screw with a washer for easy disassembly and fastening, wherein the washer before deformation is held in an intermediate portion of the male screw. 前記ワッシャが形状記憶合金からなることを特徴とする請求項９に記載の易分解締結用のワッシャ付き雄ねじ。   The male screw with a washer for easy disassembly and fastening according to claim 9, wherein the washer is made of a shape memory alloy. 前記ワッシャがスプリングワッシャであることを特徴とする請求項９または請求項１０に記載の易分解締結用のワッシャ付き雄ねじ。   The said washer is a spring washer, The washer-equipped male screw for easily disassembled fastening of Claim 9 or Claim 10 characterized by the above-mentioned. 前記雄ねじの中間部側面の雄ねじ部側端またはその付近に、突出部が１つ以上設けられ、該突出部により該中間部に前記ワッシャが保持されていることを特徴とする請求項９ないし請求項１１のいずれか１項に記載の易分解締結用のワッシャ付き雄ねじ。   10. One or more protrusions are provided at or near an end of the male screw on the side of the male screw part, and the washer is held by the protrusion at the intermediate part. Item 12. A male screw with a washer for easily disassembling and fastening according to any one of items 11. 前記雄ねじの中間部の雄ねじ部側端またはその付近に、太径部が設けられ、該太径部により該中間部に前記ワッシャが保持されていることを特徴とする請求項９ないし請求項１１のいずれか１項に記載の易分解締結用のワッシャ付き雄ねじ。   12. A thick-diameter portion is provided at or near an end of the male screw on the side of the male screw portion, and the washer is held in the intermediate portion by the thick-diameter portion. The male screw with a washer for easily disassembling fastening according to any one of the above. 雄ねじと環状ないし略環状のワッシャとからなり、
前記雄ねじが、雄ねじ部と該雄ねじ部より大きい直径を有する頭部との間に、該雄ねじ部と段差を形成して設けられた、該雄ねじ部外径よりも大きく、かつ、該頭部の直径よりも小さい直径の中間部を有し、
前記ワッシャが、前記雄ねじの中間部の直径よりも大きくかつ該雄ねじの頭部の直径より小さい内径と、前記雄ねじの頭部の直径よりも大きい外径とを有するとともに所定の温度以上に加熱されると変形して内径が前記雄ねじの頭部の直径と同等または該頭部の直径より大きくなるものであって、かつ、
前記雄ねじの中間部に前記変形前のワッシャが保持されている易分解締結用のワッシャ付き雄ねじの製造方法であって、
前記変形前のワッシャの孔に前記雄ねじを挿入し、該ワッシャを雄ねじの中間部に位置させた後、中間部の雄ねじ部側端部ないしその付近を少なくとも部分的に拡径させる拡径処理を行うことを特徴とする易分解締結用のワッシャ付き雄ねじの製造方法。 It consists of a male screw and an annular or substantially annular washer,
The male screw is larger than the outer diameter of the male screw portion provided in a step with the male screw portion between the male screw portion and a head having a larger diameter than the male screw portion, and Having an intermediate portion with a diameter smaller than the diameter,
The washer has an inner diameter that is larger than the diameter of the middle portion of the male screw and smaller than the diameter of the head portion of the male screw, and an outer diameter that is larger than the diameter of the head portion of the male screw, and is heated to a predetermined temperature or higher. Then, the inner diameter is deformed to be equal to or larger than the diameter of the head of the male screw, and
A method of manufacturing a male screw with a washer for easy disassembly and fastening, wherein the washer before deformation is held in an intermediate part of the male screw,
After the male screw is inserted into the hole of the washer before deformation, the washer is positioned at the middle portion of the male screw, and then the diameter-expansion treatment is performed to at least partially enlarge the end portion of the middle portion of the male screw portion or its vicinity. A manufacturing method of a male screw with a washer for easy disassembly fastening characterized by performing.
JP2006194316A 2005-07-14 2006-07-14 Assembly which is easily disassembled and fastened, structure which is easily disassembled and fastened, male screw for easy disassembling and fastening, male screw with washer for easy disassembling and fastening, and manufacturing method therefor Pending JP2007046779A (en)

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JPS58125715U (en) * 1982-02-18 1983-08-26 トヨタ自動車株式会社 Bolt with washer
JPS60180812U (en) * 1984-05-10 1985-11-30 タキゲン製造株式会社 Fixed structure with countersunk screws
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JPH0338945A (en) * 1989-07-06 1991-02-20 Canon Inc Isdn telephone set
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JPH0885403A (en) * 1994-09-16 1996-04-02 Suzuki Motor Corp Bumper fitting structure
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JP2003181938A (en) * 2001-12-19 2003-07-03 Fuji Heavy Ind Ltd Mounting structure for resin member
JP2004211817A (en) * 2002-12-27 2004-07-29 Fukasawa:Kk Stepped component with projection
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WO2009072449A1 (en) * 2007-12-03 2009-06-11 Tokai University Educational System Fastening body structure
JP2009138779A (en) * 2007-12-03 2009-06-25 Tokai Univ Fastening body structure
US8303222B2 (en) 2007-12-03 2012-11-06 Tokai University Educational System Fastening body structure

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