JP4920063B2 - tightening structure - Google Patents

tightening structure Download PDF

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JP4920063B2
JP4920063B2 JP2009197045A JP2009197045A JP4920063B2 JP 4920063 B2 JP4920063 B2 JP 4920063B2 JP 2009197045 A JP2009197045 A JP 2009197045A JP 2009197045 A JP2009197045 A JP 2009197045A JP 4920063 B2 JP4920063 B2 JP 4920063B2
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bolt
male screw
screw portion
plate member
nut
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JP2011047479A (en
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祐治 小竹
隆司 北野
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Senqcia Corp
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本発明は、板状部材間をボルトを用いて締結する際に、その締結作業を行なう作業者側から板状部材の背後側に作業者の手や工具等が届かなくなる場合に用いられる締結構造に関するものである。   The present invention is a fastening structure that is used when a worker's hand, tool, or the like does not reach the back side of a plate-like member from the side of the worker performing the fastening operation when fastening the plate-like members using bolts. It is about.

従来において、図6から図8に示すように、互いに厚さ方向に重ね合わせた2枚の板状部材6,8より図中左側の領域に作業者の手や工具等が届かない状況にあるとしても、特殊構造のボルト4を用いることにより、板状部材6,8間の締結作業をこの板状部材6,8より図中右側の領域からだけで行なうことができ、さらに、ボルト4の締め付けトルクを管理できるようにした締結構造2があった(例えば、特許文献1参照)。   Conventionally, as shown in FIGS. 6 to 8, the operator's hand, tool, or the like cannot reach the area on the left side of the drawing from the two plate-like members 6 and 8 stacked in the thickness direction. However, by using the bolt 4 having a special structure, the fastening operation between the plate-like members 6 and 8 can be performed only from the region on the right side of the plate-like members 6 and 8. There has been a fastening structure 2 that can manage the tightening torque (see, for example, Patent Document 1).

この従来の締結構造2で用いるボルト4は、図6に示すように、一端にオネジ部10が形成され、他端にピンテール12が形成されている。また、オネジ部10とピンテール12の間の同一軸線上には、ピンテール12側から順に、他のピンテール14、他のオネジ部16が形成されている。   As shown in FIG. 6, the bolt 4 used in this conventional fastening structure 2 has a male thread portion 10 formed at one end and a pin tail 12 formed at the other end. Further, on the same axis line between the male thread part 10 and the pin tail 12, another pin tail 14 and another male thread part 16 are formed in this order from the pin tail 12 side.

ボルト4は、図6から図8に示すように、その締め付けトルクの管理のために、ピンテール12,14が段階的に除去されていくようにしながら、板状部材8の貫通孔18を貫通したオネジ部10が板状部材6のネジ孔20にネジ結合し、オネジ部16に座金22を介してナット24がネジ結合するようになっていた。   As shown in FIGS. 6 to 8, the bolt 4 penetrates the through hole 18 of the plate-like member 8 while the pin tails 12 and 14 are removed in stages in order to manage the tightening torque. The male screw portion 10 is screwed to the screw hole 20 of the plate-like member 6, and the nut 24 is screwed to the male screw portion 16 via the washer 22.

従来の締結構造2では、図6に示すように、ボルト4のオネジ部10を板状部材6のネジ孔20に締め付ける作業の際には、ボルト4のピンテール12に係合したシャーレンチのような締め付け工具26の内部ソケット27が回転し、ピンテール12が捩じ切れるまで締め付けるようになっていることにより、オネジ部10とネジ孔20との間の締め付けトルクが適切に管理されるようになっていた。   In the conventional fastening structure 2, as shown in FIG. 6, when the male screw portion 10 of the bolt 4 is fastened to the screw hole 20 of the plate-like member 6, like a shear wrench engaged with the pin tail 12 of the bolt 4. Since the internal socket 27 of the tightening tool 26 rotates and tightens until the pin tail 12 is twisted, the tightening torque between the male screw portion 10 and the screw hole 20 can be appropriately managed. It was.

また、ボルト4のオネジ部10を板状部材6のネジ孔20に締め付け終えて、ピンテール12を除去した後で、図7に示すように、ボルト4のオネジ部16とナット24とを締め付ける作業の際には、ナット24に係合して回転する締め付け工具26の管状ソケット28が、所定の締め付けトルクに達して回転しなくなったときに、ピンテール14に係合する内部ソケット27だけが回転を続行することによりピンテール14を捩じ切るようになっている(図7及び図8参照)。このことにより、オネジ部16とナット24との間の締め付けトルクが適切に管理されるようになっていた。   Also, after tightening the male screw portion 10 of the bolt 4 into the screw hole 20 of the plate-like member 6 and removing the pin tail 12, the work of tightening the male screw portion 16 and the nut 24 of the bolt 4 as shown in FIG. In this case, when the tubular socket 28 of the clamping tool 26 that rotates by engaging with the nut 24 reaches a predetermined tightening torque, only the inner socket 27 that engages with the pin tail 14 rotates. By continuing, the pin tail 14 is twisted off (see FIGS. 7 and 8). As a result, the tightening torque between the male screw part 16 and the nut 24 is appropriately managed.

特開平7−27120号公報Japanese Patent Laid-Open No. 7-27120

しかしながら、上記した従来の締結構造2においては、図6に示すように、ボルト4のオネジ部10と板状部材6のネジ孔20との間の締め付け作業の際に、ボルト4のピンテール12を捩じ切るほどの締め付けトルクを加えたことをもって、十分に締め付けたものとみなすようになっていたが、かかる締め付けトルクは、ボルト4のオネジ部10、又は板状部材6のネジ孔20の加工精度が悪い場合などには締め付け完了前にも発生することがあるので、必ずしもオネジ部10の適切なねじ込み深さを保証するものではないという問題があった。   However, in the above-described conventional fastening structure 2, as shown in FIG. 6, the pin tail 12 of the bolt 4 is attached during the fastening operation between the male screw portion 10 of the bolt 4 and the screw hole 20 of the plate-like member 6. The tightening torque that can be twisted is considered to have been sufficiently tightened, but this tightening torque is processed by the male screw portion 10 of the bolt 4 or the screw hole 20 of the plate-like member 6. When the accuracy is low, it may occur before the completion of tightening, and thus there is a problem that an appropriate screwing depth of the male screw portion 10 is not necessarily guaranteed.

また、上記した従来の締結構造2においては、板状部材6のネジ孔20にボルト4のオネジ部10をその根元までネジ結合し、その根元のオネジが形成されていない単なる丸棒状の部分がネジ孔20のメネジと干渉してそれ以上ネジ結合ができなくなって、ピンテール12が捩じ切られた時にネジ結合が終了するが、上記丸棒状の部分がネジ孔20内に食い込んでネジ山を潰してしまうおそれがある。この時には、ボルト4のオネジ部10と板状部材6のネジ孔20のネジ結合長さが不足してしまうという問題があった。   Further, in the conventional fastening structure 2 described above, the male screw portion 10 of the bolt 4 is screwed to the screw hole 20 of the plate-like member 6 to its root, and a simple round bar-like portion where the male screw of the root is not formed is formed. When the pin tail 12 is twisted off by interfering with the female screw of the screw hole 20 and screw connection is not completed, the screw connection is completed. There is a risk of crushing. At this time, there is a problem that the screw coupling length between the male screw portion 10 of the bolt 4 and the screw hole 20 of the plate-like member 6 is insufficient.

そこで本発明は、上記問題点に鑑みて、締め付け対象となる板状部材の肉厚部の背後側に作業者の手や工具等が届かなくなる場合に用いることができ、その板状部材間を締結するボルトが、確実に適切な長さ分だけネジ結合することができると共に、適切な軸方向の耐力を確実に発揮することができる締結構造を提供することを課題とするものである。   Therefore, in view of the above problems, the present invention can be used when an operator's hand, tool, or the like does not reach the back side of the thick part of the plate-like member to be tightened. It is an object of the present invention to provide a fastening structure in which a bolt to be fastened can be reliably screw-coupled by an appropriate length and can surely exhibit appropriate axial strength.

上記課題を解決するために、本発明による締結構造は、
一端に第1オネジ部、他端に第2オネジ部、中間部に少なくとも第1オネジ部の径よりも大きい径を有する胴部が形成されたボルトと、
前記ボルトの胴部よりも大きい径を有する貫通孔が形成された第1板部材と、
段付ナットが接合された第2板部材とを備え、
前記第1板部材の貫通孔に前記ボルトの胴部が挿通され、
前記ボルトの第1オネジ部と、前記第2板部材に接合された段付ナットのメネジ部とを、前記胴部の第1オネジ部側の端面と前記段付ナットの端面が当接した状態で締結し、
前記第2オネジ部にナットを締結したことを特徴とするものである。
In order to solve the above problems, the fastening structure according to the present invention is:
A bolt in which a first male screw portion is formed at one end, a second male screw portion at the other end, and a barrel portion having a diameter larger than at least the diameter of the first male screw portion is formed at an intermediate portion;
A first plate member formed with a through hole having a larger diameter than the body of the bolt ;
A second plate member joined with a stepped nut,
The barrel portion of the bolt is inserted through the through hole of the first plate member ,
A first male screw portion of the bolt, a state in which the a female screw portion of the stepped nut joined to the second plate member, the end face of the end face of the first male screw portion side of the body portion and the stepped nut abuts in concluded,
A nut is fastened to the second male screw portion.

また、本発明による締結構造は、
前記ボルトの第2オネジ部端部に、先端部に工具嵌合溝を有するピンテールを形成したことを特徴とするものである。
The fastening structure according to the present invention is
A pin tail having a tool fitting groove at the tip is formed at the end of the second male screw of the bolt.

このような本発明の締結構造によれば、
一端に第1オネジ部、他端に第2オネジ部、中間部に少なくとも第1オネジ部の径よりも大きい径を有する胴部が形成されたボルトと、
貫通孔が形成された第1板部材と、
段付ナットが接合された第2板部材とを備え、
前記第1板部材の貫通孔に挿通された前記ボルトの第1オネジ部と、前記第2板部材に接合された段付ナットのメネジ部とを締結し、前記第2オネジ部にナットを締結したことにより、
締め付け対象となる前記第1板部材及び前記第2板部材の肉厚部の背後側に作業者の手や工具等が届かなくなる場合に用いることができ、第1板部材と第2板部材間を締結する前記ボルトが、確実に適切な長さ分だけネジ結合することができると共に、適切な軸方向の耐力を確実に発揮することができる。
According to such a fastening structure of the present invention,
A bolt in which a first male screw portion is formed at one end, a second male screw portion at the other end, and a barrel portion having a diameter larger than at least the diameter of the first male screw portion is formed at an intermediate portion;
A first plate member formed with a through hole;
A second plate member joined with a stepped nut,
The first male screw portion of the bolt inserted into the through hole of the first plate member and the female screw portion of the stepped nut joined to the second plate member are fastened, and the nut is fastened to the second male screw portion. By doing
It can be used when an operator's hand or tool does not reach the back side of the thick part of the first plate member and the second plate member to be tightened, and between the first plate member and the second plate member The bolt for fastening the screw can surely be screw-coupled by an appropriate length and can surely exert an appropriate axial strength.

また、本発明の締結構造によれば、
前記ボルトの第2オネジ部端部に、先端部に工具嵌合溝を有するピンテールを形成したことにより、
前記ボルトの第2オネジ部とナットとの間の締め付けトルクを適切に管理することができると共に、前記ボルトの締め付け作業を容易にすることができる。
Moreover, according to the fastening structure of the present invention,
By forming a pin tail having a tool fitting groove at the tip at the end of the second male thread of the bolt,
The tightening torque between the second male thread portion of the bolt and the nut can be appropriately managed, and the tightening operation of the bolt can be facilitated.

本発明の第1の実施の形態に係る締結構造30を示す側面断面図である。It is side surface sectional drawing which shows the fastening structure 30 which concerns on the 1st Embodiment of this invention. 締結構造30の一状態を示す側面断面図である。3 is a side cross-sectional view showing one state of a fastening structure 30. FIG. 図2に示すボルト36をピンテール46側から見た正面図である。It is the front view which looked at the volt | bolt 36 shown in FIG. 2 from the pin tail 46 side. 締結構造30及び締付け工具58の一部を示す側面断面図である。3 is a side cross-sectional view showing a part of the fastening structure 30 and the fastening tool 58. FIG. 本発明の第2の実施の形態に係る締結構造70を示す側面断面図である。It is side surface sectional drawing which shows the fastening structure 70 which concerns on the 2nd Embodiment of this invention. 従来の締結構造2及び締付け工具26の一状態を示す側面断面図である。It is side surface sectional drawing which shows one state of the conventional fastening structure 2 and the fastening tool 26. FIG. 締結構造2及び締付け工具26の他の状態を示す側面断面図である。It is side surface sectional drawing which shows the other state of the fastening structure 2 and the fastening tool 26. FIG. 締結構造2のみを示す側面断面図である。It is side surface sectional drawing which shows only the fastening structure 2. FIG.

以下、本発明に係る締結構造を実施するための形態について、図面に基づいて具体的に説明する。
図1から図4は、本発明の第1の実施の形態に係る締結構造30について説明するために参照する図である。
Hereinafter, the form for carrying out the fastening structure concerning the present invention is explained concretely based on a drawing.
FIGS. 1 to 4 are views referred to for explaining a fastening structure 30 according to a first embodiment of the present invention.

本実施の形態に係る締結構造30は、図1に示すように、表側板部材32(第1板部材に相当)と裏側板部材34(第2板部材に相当)とをボルト36と六角ナット38のネジ結合により締め付けている。表側板部材32と裏側板部材34のそれぞれは、同図中の左右方向に厚さを有し、互いに重ね合わせて配置されている。   As shown in FIG. 1, a fastening structure 30 according to the present embodiment includes a front side plate member 32 (corresponding to a first plate member) and a back side plate member 34 (corresponding to a second plate member), a bolt 36 and a hexagon nut. It is tightened by 38 screw connections. Each of the front side plate member 32 and the back side plate member 34 has a thickness in the left-right direction in FIG.

ここで、締結構造30は、そのボルト36への六角ナット38の締め付け作業の際には、作業者が、図1中における表側板部材32の右側領域に居てそこから作業を行なうものとする。そして、図1中における裏側板部材34の左側領域は、作業者の手や工具が届かない状況になっているものとする。   Here, in the fastening structure 30, when the hexagon nut 38 is fastened to the bolt 36, the worker is in the right region of the front side plate member 32 in FIG. 1 and works from there. . And the left side area | region of the back side board member 34 in FIG. 1 shall be in the condition where an operator's hand and tool cannot reach.

ボルト36は、図1中左側の端部に第1オネジ部40が形成され、右側端部には第2オネジ部42が形成されている。ボルト36は、第1オネジ部40と第2オネジ部42との間の胴部44の直径(外径)が、少なくとも第1オネジ部40の外径よりも大きく形成されている。   The bolt 36 has a first male screw portion 40 formed at the left end in FIG. 1 and a second male screw portion 42 formed at the right end. The bolt 36 is formed such that the diameter (outer diameter) of the body portion 44 between the first male screw portion 40 and the second male screw portion 42 is at least larger than the outer diameter of the first male screw portion 40.

ボルト36は、六角ナット38の締め付け作業前までの段階においては、図2に示すように、その第2オネジ部42の先端部に形成されたピンテール46を備えているが、後述するように、このピンテール46は締め付け作業時に除去されるようになっている。また、ピンテール46の先端面には、図3に示すように、プラスドライバーのような工具の先端部を係合させることができる十字溝48(工具嵌合溝)が形成されている。   The bolt 36 includes a pin tail 46 formed at the distal end portion of the second male screw portion 42 as shown in FIG. 2 until the hexagon nut 38 is tightened. As will be described later, The pin tail 46 is removed during the tightening operation. Further, as shown in FIG. 3, a cross groove 48 (tool fitting groove) capable of engaging the tip of a tool such as a Phillips screwdriver is formed on the tip surface of the pin tail 46.

図1に示すように、表側板部材32には、ボルト36を通すための貫通孔50が形成されている。また、裏側板部材34には、表側板部材32の貫通孔50の位置と互いに対応する位置に嵌合孔52が形成されている。この嵌合孔52には段付きナット54が表側板部材32とは反対側から嵌合し、嵌合孔52の内側で空回りしないように固く圧入されて嵌合している。   As shown in FIG. 1, the front side plate member 32 is formed with a through hole 50 for passing the bolt 36. The back side plate member 34 is formed with a fitting hole 52 at a position corresponding to the position of the through hole 50 of the front side plate member 32. A stepped nut 54 is fitted into the fitting hole 52 from the side opposite to the front plate member 32, and is tightly press-fitted and fitted inside the fitting hole 52 so as not to idle.

次に、ボルト36と各部材間の各作業の手順について説明する。
まず、図2に示すように、ボルト36の第1オネジ部40の先端部を、表側板部材32の貫通孔50にその右側の開口部から挿入させ、段付きナット54のネジ孔54a(メネジ部に相当)にネジ結合させる。
Next, the procedure of each operation between the bolt 36 and each member will be described.
First, as shown in FIG. 2, the tip end portion of the first male screw portion 40 of the bolt 36 is inserted into the through hole 50 of the front side plate member 32 from the opening on the right side thereof, and the screw hole 54a (female screw) of the stepped nut 54 is inserted. Screw).

ボルト36の第1オネジ部40は、胴部44の第1オネジ部40側の端面が、段付きナット54の端面に突き当たるまで捩じ込むようにする。このように突き当たることにより、ボルト36の第1オネジ部40が確実に適切な長さ分だけネジ結合することができる。この作業は、図3に示すピンテール46先端面の十字溝48に、プラスドライバーのような工具の先端部を係合させて回転させることにより行なう。   The first male screw portion 40 of the bolt 36 is screwed in until the end surface of the body portion 44 on the first male screw portion 40 side hits the end surface of the stepped nut 54. By abutting in this way, the first male screw portion 40 of the bolt 36 can be reliably screw-coupled by an appropriate length. This operation is performed by engaging and rotating the tip portion of a tool such as a Phillips screwdriver in the cross groove 48 on the tip surface of the pin tail 46 shown in FIG.

次に、図4に示すように、ボルト36の第2オネジ部42における、表側板部材32の表側面(図中右側の面)から外側に突出する長さ部分に、座金56を介して、六角ナット38をネジ結合させる。   Next, as shown in FIG. 4, in the second male screw portion 42 of the bolt 36, a length portion protruding outward from the front side surface (the right side surface in the drawing) of the front side plate member 32, via a washer 56, The hexagon nut 38 is screwed.

第2オネジ部42に六角ナット38をネジ結合させる作業は、シャーレンチのような六角凹部を有する締付け工具58を用いて行なう。締付け工具58は、六角ナット38に係合する管状ソケット60と、ピンテール46に多数の溝を介して係合する内部ソケット62を備える工具である。管状ソケット60と内部ソケット62は、同軸上に配置され、互いに独立して回転することができるようになっている。   The operation of screwing the hexagon nut 38 to the second male screw portion 42 is performed using a tightening tool 58 having a hexagonal recess such as a shear wrench. The tightening tool 58 is a tool including a tubular socket 60 that engages with the hex nut 38 and an inner socket 62 that engages with the pin tail 46 through a number of grooves. The tubular socket 60 and the inner socket 62 are arranged coaxially so that they can rotate independently of each other.

締付け工具58は、内部ソケット62がピンテール46に係合してその回転を拘束した状態で、管状ソケット60だけが回転して六角ナット38を締め付けるようになっている。したがって、ボルト36には、六角ナット38の締め付け作用により、軸方向のみに作用する軸力だけが発生し、ボルト36の軸方向の耐力を低下させる軸線回りの捩れによる剪断力は発生しないようになっている。   The tightening tool 58 is configured such that only the tubular socket 60 is rotated and the hexagon nut 38 is tightened in a state where the inner socket 62 is engaged with the pin tail 46 and the rotation thereof is restricted. Therefore, only the axial force acting only in the axial direction is generated in the bolt 36 by the tightening action of the hexagon nut 38, so that the shearing force due to the twist about the axis that reduces the axial strength of the bolt 36 is not generated. It has become.

そして、締付け工具58は、六角ナット38を締め付ける管状ソケット60が所定の大きさのトルクを加えても回転しなくなったとき(締め付けトルクが所定の大きさに達したとき)に、内部ソケット62が回転を開始、続行することにより、ボルト36のピンテール46を捩じ切って除去するようになっている。   When the tubular socket 60 for tightening the hexagon nut 38 stops rotating even when a predetermined magnitude of torque is applied (when the tightening torque reaches a predetermined magnitude), the tightening tool 58 By starting and continuing the rotation, the pin tail 46 of the bolt 36 is twisted and removed.

このような本実施の形態によれば、締結構造30の締め付け対象となる表側板部材32及び/又は裏側板部材34の肉厚部の背後側に作業者の手や工具等が届かなくなる場合に用いることができ、また板部材32,34間を締結するボルト36のオネジ部40が、確実に適切な長さ分だけネジ結合することができると共に、ボルト36が適切な軸方向の耐力を確実に発揮することができる。   According to this embodiment, when the operator's hand, tool, or the like cannot reach the back side of the thick portion of the front side plate member 32 and / or the back side plate member 34 to be tightened by the fastening structure 30. Further, the male thread portion 40 of the bolt 36 that fastens between the plate members 32 and 34 can be screwed together by an appropriate length, and the bolt 36 ensures an appropriate axial strength. Can be demonstrated.

また、本実施の形態によれば、ボルト36の第2オネジ部42の端部にピンテール46を形成したことにより、ボルト36の第2オネジ部42と六角ナット36との間の締め付けトルクを適切に管理することができる。   Further, according to the present embodiment, the pintail 46 is formed at the end of the second male screw portion 42 of the bolt 36, so that the tightening torque between the second male screw portion 42 of the bolt 36 and the hexagon nut 36 is appropriately set. Can be managed.

また、本実施の形態によれば、ボルト36のピンテール46の先端部に十字溝48が形成されていることにより、この十字溝48にプラスドライバーのような工具の先端部を係合させて回転させることができるので、ボルト36の締め付け作業を容易にすることができる。   Further, according to the present embodiment, since the cross groove 48 is formed at the tip of the pin tail 46 of the bolt 36, the tip of a tool such as a Phillips screwdriver is engaged with the cross groove 48 and rotated. Therefore, the bolt 36 can be easily tightened.

次に、図5は、本発明の第2の実施の形態に係る締結構造70について説明するために参照する図である。   Next, FIG. 5 is a figure referred in order to demonstrate the fastening structure 70 which concerns on the 2nd Embodiment of this invention.

図5は、本実施の形態で用いられるボルト72の締め付け途中の状態を示す図であり、六角ナット38の締め付け後において、ピンテール46を除去する直前の状態を示す図である。   FIG. 5 is a diagram showing a state in the middle of tightening the bolt 72 used in the present embodiment, and is a diagram showing a state immediately before the pin tail 46 is removed after the hexagon nut 38 is tightened.

本実施の形態では、その裏側板部材34に段付き嵌合孔74が形成され、この段付き嵌合孔74の大径部と小径部に、段付きナット54の大径部と小径部がそれぞれ圧入されて嵌合するようになっている。   In the present embodiment, a stepped fitting hole 74 is formed in the back side plate member 34, and a large diameter portion and a small diameter portion of the stepped nut 54 are provided in a large diameter portion and a small diameter portion of the stepped fitting hole 74. Each is press-fitted to fit.

このような本実施の形態によれば、前記第1の実施の形態と同様の効果を有する他に、裏側板部材34の段付き嵌合孔74に段付きナット54全体が嵌合していることにより、段付きナット54の大径部と小径部の2つの部分が段付き嵌合孔74の大径部と小径部の2つの孔部に圧入するので、段付き嵌合孔74内で段付きナット54がボルト72と共回りすることを防止することができる。   According to the present embodiment, in addition to having the same effect as the first embodiment, the entire stepped nut 54 is fitted in the stepped fitting hole 74 of the back plate member 34. As a result, the two portions of the large diameter portion and the small diameter portion of the stepped nut 54 are press-fitted into the two large diameter portions and the small diameter portion of the stepped fitting hole 74. It is possible to prevent the stepped nut 54 from rotating together with the bolt 72.

また、前記第1の実施の形態のように段付きナット54の大径部が裏側板部材34の裏側(図5中左側)の面から外側に突出しないので、段付きナット54の大径部が他部材と干渉することを防止することができる。   In addition, since the large diameter portion of the stepped nut 54 does not protrude outward from the back side (left side in FIG. 5) surface of the back side plate member 34 as in the first embodiment, the large diameter portion of the stepped nut 54 is provided. Can be prevented from interfering with other members.

なお、前記実施の形態に係るボルト36,72の、ピンテール46の先端面には工具嵌合溝として十字溝48が形成されていたが、この十字溝48の代わりに、マイナスドライバーのような工具の先端部が係合するすり割りや、六角レンチのような工具の先端部が係合する六角穴等の穴が形成されていてもよい。   In addition, although the cross groove 48 was formed as a tool fitting groove | channel on the front end surface of the pin tail 46 of the volt | bolts 36 and 72 which concern on the said embodiment, it replaces with this cross groove 48, and a tool like a minus driver. A slot such as a hexagonal hole that engages the tip of a tool such as a hexagon wrench, or a slot that engages the tip of the tool may be formed.

2 締結構造
4 ボルト
6,8 部材
10 オネジ部
12,14 ピンテール
16 オネジ部
18 貫通孔
20 ネジ孔
22 座金
24 ナット
26 締付け工具
27 内部ソケット
28 管状ソケット
30 締結構造
32 表側板部材
34 裏側板部材
36 ボルト
38 六角ナット
40 第1オネジ部
42 第2オネジ部
44 胴部
46 ピンテール
48 十字溝
50 貫通孔
52 嵌合孔
54 段付きナット
54a ネジ孔
56 座金
58 締付け工具
60 管状ソケット
62 内部ソケット
70 締結構造
72 ボルト
74 段付き嵌合孔
2 Fastening Structure 4 Bolt 6, 8 Member 10 Male Thread Part 12, 14 Pin Tail 16 Male Thread Part 18 Through Hole 20 Screw Hole 22 Washer 24 Nut 26 Tightening Tool 27 Internal Socket 28 Tubular Socket 30 Fastening Structure 32 Front Side Plate Member 34 Back Side Plate Member 36 Bolt 38 Hexagon nut 40 First male screw part 42 Second male screw part 44 Body 46 Pin tail 48 Cross groove 50 Through hole 52 Fitting hole 54 Stepped nut 54a Screw hole 56 Washer 58 Tightening tool 60 Tubular socket 62 Internal socket 70 Fastening structure 72 bolt 74 stepped fitting hole

Claims (2)

一端に第1オネジ部、他端に第2オネジ部、中間部に少なくとも第1オネジ部の径よりも大きい径を有する胴部が形成されたボルトと、
前記ボルトの胴部よりも大きい径を有する貫通孔が形成された第1板部材と、
段付ナットが接合された第2板部材とを備え、
前記第1板部材の貫通孔に前記ボルトの胴部が挿通され、
前記ボルトの第1オネジ部と、前記第2板部材に接合された段付ナットのメネジ部とを、前記胴部の第1オネジ部側の端面と前記段付ナットの端面が当接した状態で締結し、
前記第2オネジ部にナットを締結した
ことを特徴とする締結構造。
A bolt in which a first male screw portion is formed at one end, a second male screw portion at the other end, and a barrel portion having a diameter larger than at least the diameter of the first male screw portion is formed at an intermediate portion;
A first plate member formed with a through hole having a larger diameter than the body of the bolt ;
A second plate member joined with a stepped nut,
The barrel portion of the bolt is inserted through the through hole of the first plate member ,
A first male screw portion of the bolt, a state in which the a female screw portion of the stepped nut joined to the second plate member, the end face of the end face of the first male screw portion side of the body portion and the stepped nut abuts in concluded,
A fastening structure characterized in that a nut is fastened to the second male screw portion.
前記ボルトの第2オネジ部端部に、先端部に工具嵌合溝を有するピンテールを形成したことを特徴とする請求項1記載の締結構造。   The fastening structure according to claim 1, wherein a pin tail having a tool fitting groove at a tip portion is formed at an end portion of the second male screw portion of the bolt.
JP2009197045A 2009-08-27 2009-08-27 tightening structure Active JP4920063B2 (en)

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