JP2016080143A - Screw member and fastening structure of fastened member - Google Patents

Screw member and fastening structure of fastened member Download PDF

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JP2016080143A
JP2016080143A JP2014215418A JP2014215418A JP2016080143A JP 2016080143 A JP2016080143 A JP 2016080143A JP 2014215418 A JP2014215418 A JP 2014215418A JP 2014215418 A JP2014215418 A JP 2014215418A JP 2016080143 A JP2016080143 A JP 2016080143A
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cap
head
container
fastened
bolt
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松原　正光
Masamitsu Matsubara
正光 松原
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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  • Pressure Vessels And Lids Thereof (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a screw member capable of preventing a cap mounted to the head part of a bolt from loosening.SOLUTION: A fastened member 2 is fastened by inserting a bolt 10 into an open hole penetrating the fastened member 2. A cap 20 is mounted to a head part 12, the cap having a blockage part 22 at one end of both ends of a cylindrical wall part 21, and an opening part 23 at the other end. Since a seal washer 30 between the peripheral edge part of the opening part 23 and the fastened member 2 is pressure-welded, the inside and outside of the cap 20 are shut down. Since the cylindrical wall part 21 is formed into a cylindrical shape, even when an object collides with the cylindrical wall part 21, the cap 20 can be caused to hardly rotate compared to the case where the cylindrical wall part 21 has a corner. Consequently, the cap 20 can be prevented from loosening.SELECTED DRAWING: Figure 1

Description

本発明はねじ部材に関し、特にボルトの頭部に装着されたキャップが緩むことを防止できるねじ部材および被締結部材の締結構造に関するものである。   The present invention relates to a screw member, and more particularly to a screw member and a fastening structure for a member to be fastened that can prevent a cap mounted on the head of a bolt from loosening.

液体、ガス、粉末等の内容物が封入されるタンク等の容器は、内容物の注入または排出等のために容器開口部が形成され、普段は容器開口部がカバーにより塞がれる。容器及びカバーを貫通する貫通孔にボルトを挿入して、容器とカバーとを締結するので、貫通孔から内容物が漏洩することがある。そのため、ボルトの頭部にキャップを螺合させて、カバーに向かってキャップを締め付けることで、キャップとカバーとの間に設けたシールワッシャが圧接される。これにより、キャップの内側と外側とが遮断され、貫通孔から内容物が漏洩することを防止できる（特許文献１）。   A container such as a tank in which contents such as liquid, gas, and powder are enclosed has a container opening for injection or discharge of the contents, and the container opening is usually closed by a cover. Since the bolt is inserted into the through hole penetrating the container and the cover and the container and the cover are fastened, the contents may leak from the through hole. Therefore, the seal washer provided between the cap and the cover is pressed by screwing the cap onto the head of the bolt and tightening the cap toward the cover. Thereby, the inner side and the outer side of a cap are interrupted | blocked and it can prevent that the content leaks from a through-hole (patent document 1).

特開２０１３−１９４８８８号公報JP 2013-194888 A

しかしながら、特許文献１記載のねじ部材は、平面視におけるキャップの外形が不明である。平面視におけるキャップの外形が正六角形状の場合には、キャップを締め付けた後にキャップの外周面の角に物体が衝突することで、キャップが回転してキャップの締め付けが緩む可能性がある。これにより、キャップとカバーとの間でシールワッシャが十分に圧接されず、貫通孔から内容物が漏洩する可能性があるという問題点がある。   However, the external shape of the cap in the plan view of the screw member described in Patent Document 1 is unknown. When the outer shape of the cap in a plan view is a regular hexagon, the cap may rotate and the cap may be loosened due to the object colliding with the corner of the outer peripheral surface of the cap after the cap is tightened. As a result, the seal washer is not sufficiently pressed between the cap and the cover, and there is a problem that the contents may leak from the through hole.

本発明は上述した問題点を解決するためになされたものであり、ボルトの頭部に装着されたキャップが緩むことを防止できるねじ部材および被締結部材の締結構造を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fastening structure for a screw member and a fastened member that can prevent a cap attached to the head of a bolt from loosening. .

この目的を達成するために請求項１記載のねじ部材は、円柱状の頭部を有し、被締結部材を貫通する貫通孔に挿入されて前記被締結部材を締結するボルトと、軸心と垂直な面における径方向の厚さが均一の筒状に形成される筒壁部の両端のうち一端に閉塞部が設けられると共に他端に開口部が設けられ、その開口部から前記頭部を挿入させることで前記頭部に装着されるキャップと、そのキャップが前記頭部に装着された状態で、前記開口部の周縁部と前記被締結部材との間で圧接されるシール部材とを備え、前記ボルトは、前記頭部の側面に形成されるおねじ部と、前記頭部の頂面に工具が係合する第１係合部とを備え、前記キャップは、前記筒壁部の内側に形成され、前記おねじ部に螺合するめねじ部と、前記閉塞部の外側に工具が係合する第２係合部とを備えている。   In order to achieve this object, a screw member according to claim 1 has a cylindrical head, and is inserted into a through-hole penetrating the fastened member to fasten the fastened member, and an axis. Of the both ends of the cylindrical wall portion formed in a cylindrical shape having a uniform radial thickness on the vertical surface, a closed portion is provided at one end and an opening portion is provided at the other end. A cap that is attached to the head by being inserted, and a seal member that is press-contacted between a peripheral portion of the opening and the fastening member in a state where the cap is attached to the head. The bolt includes a male thread portion formed on a side surface of the head portion and a first engagement portion with which a tool engages with a top surface of the head portion, and the cap is located on the inner side of the cylindrical wall portion. And a tool is engaged with the external thread outside the closed part. And a second engagement portion that.

請求項２記載のねじ部材は、請求項１記載のものにおいて、前記第１係合部および前記第２係合部は、同一の工具が係合する形状に形成される。   According to a second aspect of the present invention, in the screw member according to the first aspect, the first engaging portion and the second engaging portion are formed in a shape in which the same tool is engaged.

請求項３記載のねじ部材は、請求項１又は２に記載のものにおいて、前記第１係合部および前記第２係合部は、前記被締結部材側に凹んだ形状に形成される。   According to a third aspect of the present invention, in the screw member according to the first or second aspect, the first engaging portion and the second engaging portion are formed in a recessed shape on the fastened member side.

請求項４記載の被締結部材の締結構造は、請求項１から３のいずれかに記載のねじ部材を用いた被締結部材の締結構造であって、前記被締結部材は、端部に容器開口部が形成され、内容物が収容される容器と、前記容器開口部を塞ぐカバーとを備え、前記容器と前記カバーとが重なる部分に複数の前記貫通孔が貫通され、複数の前記貫通孔に複数の前記ボルトをそれぞれ挿入して前記カバーと前記容器とを締結し、複数の前記ボルトの前記頭部に複数の前記キャップをそれぞれ装着することで、複数の前記キャップと前記カバーとの間で複数の前記シール部材がそれぞれ圧接される。   The fastening structure of the fastened member according to claim 4 is a fastening structure of the fastened member using the screw member according to any one of claims 1 to 3, wherein the fastened member has a container opening at an end. A container for storing contents and a cover for closing the container opening, and a plurality of the through holes are penetrated in a portion where the container and the cover overlap with each other. A plurality of the bolts are respectively inserted to fasten the cover and the container, and a plurality of the caps are respectively attached to the heads of the plurality of bolts, so that the plurality of the caps and the cover are interposed. The plurality of seal members are pressed against each other.

請求項１記載のねじ部材によれば、被締結部材を貫通する貫通孔にボルトを挿入して、ボルトの頭部の頂面に形成される第１係合部に工具を係合し、ボルトを回転させることで被締結部材が締結される。ボルトの頭部は円柱状に形成され、頭部の側面にはおねじ部が設けられる。一方、筒状に形成される筒壁部の両端のうち一端に閉塞部を設け、他端に開口部を設けるキャップには、ボルトの頭部のおねじ部に螺合するめねじ部が筒壁部の内側に設けられる。そのため、閉塞部の外側に形成される第２係合部に工具を係合させてキャップを回転させることで、開口部からボルトの頭部が挿入されると共に、ボルトのおねじ部とキャップのめねじ部とが螺合する。これにより、ボルトの頭部にキャップが装着されると共に、被締結部材に向かってキャップを締め付けられるので、キャップの開口部の周縁部と被締結部材との間に配設されるシール部材が圧接される。その結果、キャップの内側と外側とを遮断できる効果がある。   According to the screw member according to claim 1, the bolt is inserted into the through hole that penetrates the member to be fastened, and the tool is engaged with the first engagement portion formed on the top surface of the head portion of the bolt. The member to be fastened is fastened by rotating. The head portion of the bolt is formed in a cylindrical shape, and a male screw portion is provided on the side surface of the head portion. On the other hand, the cap provided with the closed portion at one end of the both ends of the cylindrical wall portion formed in the cylindrical shape and the opening at the other end has a female screw portion screwed into the male thread portion of the bolt head. It is provided inside the part. Therefore, by rotating the cap by engaging the tool with the second engaging portion formed outside the closing portion, the head portion of the bolt is inserted from the opening, and the threaded portion of the bolt and the cap The female thread part is screwed together. As a result, the cap is mounted on the head of the bolt and the cap is tightened toward the member to be fastened, so that the seal member disposed between the peripheral portion of the opening of the cap and the member to be fastened is pressed. Is done. As a result, there is an effect that the inner side and the outer side of the cap can be blocked.

また、キャップの筒壁部は軸心と垂直な面における径方向の厚さが均一であるため、キャップを締め付けた後にキャップの筒壁部に物体が衝突したとしても、筒壁部に角がある場合と比べてキャップを回転させ難くできる。よって、キャップが緩むことを防止できる効果がある。   In addition, since the cylindrical wall portion of the cap has a uniform radial thickness in a plane perpendicular to the axial center, even if an object collides with the cylindrical wall portion of the cap after the cap is tightened, there is a corner on the cylindrical wall portion. The cap can be made harder to rotate than in some cases. Therefore, the cap can be prevented from being loosened.

請求項２記載のねじ部材によれば、第１係合部および第２係合部には同一の工具が係合するので、請求項１の効果に加え、締結作業の効率を向上できる効果がある。   According to the screw member according to claim 2, since the same tool is engaged with the first engagement portion and the second engagement portion, in addition to the effect of claim 1, there is an effect that the efficiency of the fastening work can be improved. is there.

請求項３記載のねじ部材によれば、第１係合部および第２係合部が被締結部材側に凹んだ形状に形成されるので、第１係合部および第２係合部が凸状に形成される場合と比べて、めねじ部とおねじ部とが螺合する面を確保することができる。従って、キャップが緩むことを防止できる効果がある。   According to the screw member of the third aspect, since the first engagement portion and the second engagement portion are formed in a shape recessed toward the fastened member side, the first engagement portion and the second engagement portion are convex. Compared with the case where it forms in a shape, the surface where a female screw part and a external thread part screw together can be ensured. Therefore, the cap can be prevented from being loosened.

また、第１係合部および第２係合部が被締結部材側に凹んだ形状に形成されるので、第１係合部および第２係合部が凸状に形成される場合と比べて、第１係合部および第２係合部に物体を衝突させ難くできる。従って、締め付けられたキャップに物体が衝突してキャップが回転することを防止できるので、請求項１又は２の効果に加え、キャップが緩むことを防止できる効果がある。   In addition, since the first engagement portion and the second engagement portion are formed in a shape recessed toward the fastened member side, compared to the case where the first engagement portion and the second engagement portion are formed in a convex shape. The object can be made difficult to collide with the first engaging portion and the second engaging portion. Accordingly, since it is possible to prevent the cap from rotating due to an object colliding with the tightened cap, in addition to the effect of the first or second aspect, it is possible to prevent the cap from being loosened.

請求項４記載の被締結部材の締結構造によれば、請求項１から３のいずれかに記載のねじ部材を用いた被締結部材の締結構造であって、被締結部材は、端部に容器開口部が形成され、内容物が収容される容器と、容器開口部を塞ぐカバーとを備えている。容器とカバーとが重なる部分に貫通孔が貫通され、貫通孔にボルトを挿入してカバーと容器とを締結する。ボルトの頭部にキャップを装着することで、キャップとカバーとの間でシール部材が圧接される。これにより、請求項１から３のいずれかの効果に加え、貫通孔から内容物が漏洩することを防止できる。   According to the fastening structure of the fastened member according to claim 4, the fastening structure of the fastened member using the screw member according to claim 1, wherein the fastened member is a container at the end. An opening is formed, and a container for storing contents and a cover for closing the container opening are provided. A through hole is penetrated in a portion where the container and the cover overlap, and a bolt is inserted into the through hole to fasten the cover and the container. By attaching the cap to the head of the bolt, the seal member is pressed between the cap and the cover. Thereby, in addition to the effect in any one of Claims 1-3, it can prevent that the content leaks from a through-hole.

本発明の第１実施の形態におけるねじ部材および被締結部材の断面図である。It is sectional drawing of the screw member and to-be-fastened member in 1st Embodiment of this invention. （ａ）はボルトの平面図であり、（ｂ）はキャップの平面図である。(A) is a top view of a volt | bolt, (b) is a top view of a cap. 第２実施の形態におけるねじ部材および被締結部材の断面図である。It is sectional drawing of the screw member and to-be-fastened member in 2nd Embodiment. （ａ）はボルトの平面図であり、（ｂ）はキャップの平面図である。(A) is a top view of a volt | bolt, (b) is a top view of a cap.

以下、本発明の好ましい実施の形態について、添付図面を参照して説明する。まず、図１、図２（ａ）及び図２（ｂ）を参照して、ねじ部材１及びねじ部材１を用いた被締結部材２の締結構造を説明する。図１は本発明の第１実施の形態におけるねじ部材１及び被締結部材２の断面図であり、図２（ａ）はボルト１０の平面図であり、図２（ｂ）はキャップ２０の平面図である。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. First, with reference to FIG. 1, FIG. 2 (a), and FIG.2 (b), the fastening structure of the to-be-fastened member 2 using the screw member 1 and the screw member 1 is demonstrated. FIG. 1 is a cross-sectional view of a screw member 1 and a fastened member 2 according to a first embodiment of the present invention, FIG. 2 (a) is a plan view of a bolt 10, and FIG. FIG.

図１に示すようにねじ部材１は、被締結部材２を締結するボルト１０と、ボルト１０の頭部１２に装着されるキャップ２０と、キャップ２０と被締結部材２との間に配設され、ゴム状弾性体から構成されるリング状のシールワッシャ３０とを備え、キャップ２０と被締結部材２との間でシールワッシャ３０が圧接される。   As shown in FIG. 1, the screw member 1 is disposed between a bolt 10 that fastens the fastened member 2, a cap 20 that is attached to the head 12 of the bolt 10, and the cap 20 and the fastened member 2. And a ring-shaped seal washer 30 made of a rubber-like elastic body, and the seal washer 30 is pressed between the cap 20 and the fastened member 2.

被締結部材２は、液体、ガス、粉末等の内容物が収容される容器４と、容器４に形成された容器開口部４ａを塞ぐカバー６と、容器４とカバー６との間に配設され、ゴム状弾性体から構成されるガスケット８とを備えている。   The fastened member 2 is disposed between a container 4 in which contents such as liquid, gas, and powder are stored, a cover 6 that closes a container opening 4 a formed in the container 4, and the container 4 and the cover 6. And a gasket 8 made of a rubber-like elastic body.

容器４には、容器４とカバー６とが重なる部分（容器開口部４ａの周囲）に、ボルト１０が貫通して螺合するためのねじ穴である第１めねじ部４ｂが複数設けられる。一方、カバー６及びガスケット８には、第１めねじ部４ｂの谷の径よりも大きい径を有する第１拡大孔６ａ及び第２拡大孔８ａが、第１めねじ部４ｂに対応する位置にそれぞれ複数設けられる。複数のボルト１０が、第１拡大孔６ａ及び第２拡大孔８ａに挿入されて第１めねじ部４ｂにそれぞれ螺合することで、被締結部材２が締結される。   The container 4 is provided with a plurality of first female screw portions 4b which are screw holes through which the bolts 10 are threaded and engaged with each other (around the container opening 4a) where the container 4 and the cover 6 overlap. On the other hand, in the cover 6 and the gasket 8, the first enlarged hole 6a and the second enlarged hole 8a having a diameter larger than the diameter of the valley of the first female screw part 4b are located at positions corresponding to the first female screw part 4b. A plurality of them are provided. The plurality of bolts 10 are inserted into the first enlarged hole 6a and the second enlarged hole 8a and screwed into the first female thread portion 4b, whereby the fastened member 2 is fastened.

ボルト１０は、軸部１１と、第１拡大孔６ａよりも大きい径を有する円柱状の頭部１２と、軸部１１の側面に設けられる第１おねじ部１３と、頭部１２の側面に設けられる第２おねじ部１４と、頭部１２の頂面１５の中心に設けられ、平面視において正六角形状（図２（ａ）参照）に軸部１１側に凹んだ第１係合部１６とを備えている。第１拡大孔６ａ及び第２拡大孔８ａに軸部１１を挿入させた状態で、第１係合部１６に六角レンチ等の工具を係合してボルト１０を回転させることで、軸部１１の第１おねじ部１３が容器４の第１めねじ部４ｂに螺合する。第１拡大孔６ａの径よりも頭部１２の径が大きいので、容器４に向かってカバー６を押し付けるように、ボルト１０が締め付けられる。その結果、容器４とカバー６との間に配設されるガスケット８が圧接されるので、容器４とカバー６との間から内容物が漏洩することを防止できる。   The bolt 10 includes a shaft portion 11, a columnar head portion 12 having a larger diameter than the first enlarged hole 6 a, a first male screw portion 13 provided on the side surface of the shaft portion 11, and a side surface of the head portion 12. The second male thread portion 14 provided and the first engagement portion that is provided at the center of the top surface 15 of the head portion 12 and is recessed toward the shaft portion 11 in a regular hexagonal shape (see FIG. 2A) in plan view. 16. In a state where the shaft portion 11 is inserted into the first enlarged hole 6a and the second enlarged hole 8a, a tool such as a hexagon wrench is engaged with the first engaging portion 16 and the bolt 10 is rotated, whereby the shaft portion 11 is rotated. The first male screw portion 13 is screwed into the first female screw portion 4 b of the container 4. Since the diameter of the head 12 is larger than the diameter of the first enlarged hole 6 a, the bolt 10 is tightened so as to press the cover 6 toward the container 4. As a result, the gasket 8 disposed between the container 4 and the cover 6 is pressed, so that the contents can be prevented from leaking from between the container 4 and the cover 6.

キャップ２０は、径方向の厚さが均一であり、片方の端部を閉じた筒状に構成される。キャップ２０は、円筒状に形成される筒壁部２１と、筒壁部２１の上端を閉じた閉塞部２２と、筒壁部２１の下端を開口した開口部２３と、筒壁部２１の内側に設けられ、ボルト１０の第２おねじ部１４に螺合する第２めねじ部２４と、閉塞部２２の外側の中心に設けられ、第１係合部１６と同一形状に形成される（平面視において正六角形状（図２（ｂ）参照）に開口部２３側に凹む）第２係合部２６とを備えている。第２係合部２６に六角レンチ等の工具を係合してキャップ２０を回転させることで、開口部２３からボルト１０の頭部１２が挿入され、筒壁部２１の内側の第２めねじ部２４が頭部１２の側面の第２おねじ部１４に螺合する。これにより、カバー６に向かってキャップ２０が締め付けられるので、開口部２３の周縁部とカバー６との間に配設されるシールワッシャ３０が圧接される。その結果、キャップ２０の内側と外側とが遮断される。   The cap 20 has a uniform thickness in the radial direction and is formed in a cylindrical shape with one end closed. The cap 20 includes a cylindrical wall portion 21 that is formed in a cylindrical shape, a closing portion 22 that closes the upper end of the cylindrical wall portion 21, an opening portion 23 that opens the lower end of the cylindrical wall portion 21, and the inner side of the cylindrical wall portion 21. Provided at the center of the outer side of the closing portion 22 and formed in the same shape as the first engaging portion 16 (see FIG. A second hexagonal shape (see FIG. 2B) that is recessed toward the opening 23 is provided in the plan view. By engaging a tool such as a hexagon wrench with the second engagement portion 26 and rotating the cap 20, the head 12 of the bolt 10 is inserted from the opening 23, and the second female screw inside the cylindrical wall portion 21 is inserted. The portion 24 is screwed into the second male screw portion 14 on the side surface of the head 12. As a result, the cap 20 is tightened toward the cover 6, so that the seal washer 30 disposed between the peripheral edge of the opening 23 and the cover 6 is pressed. As a result, the inside and outside of the cap 20 are blocked.

ここで、ボルト１０は被締結部材２を貫通しているので、第１おねじ部１３と第１めねじ部４ｂとの隙間および頭部１２の下面とカバー６との隙間を通ってキャップ２０の内側に内容物が侵入するおそれがある。シールワッシャ３０が圧接されてキャップ２０の内側と外側とが遮断されるので、第１おねじ部１３と第１めねじ部４ｂとの隙間および頭部１２の下面とカバー６との隙間を通って内容物が漏洩することを防止できる。   Here, since the bolt 10 penetrates the fastened member 2, the cap 20 passes through the gap between the first male screw portion 13 and the first female screw portion 4 b and the gap between the lower surface of the head 12 and the cover 6. There is a risk that the contents may enter the inside. Since the seal washer 30 is pressed and the inner side and the outer side of the cap 20 are cut off, the gap between the first male screw portion 13 and the first female screw portion 4b and the gap between the lower surface of the head 12 and the cover 6 are passed. Content can be prevented from leaking.

また、キャップ２０を締め付けた状態で、他のねじ部材１を締め付ける際の工具や、風により飛来してきた小石等の物体がキャップ２０の筒壁部２１に衝突して、キャップ２０が回転して緩むことがある。しかし、キャップ２０の筒壁部２１は円筒状に形成されるので、筒壁部２１の外周面に角がある場合と比べて、キャップ２０を回転し難くすることができる。よって、キャップ２０が緩むことを防止できるので、内容物が漏洩することを防止できる。   In addition, when the cap 20 is tightened, a tool for tightening the other screw member 1 or an object such as a pebble flying by the wind collides with the cylindrical wall portion 21 of the cap 20 so that the cap 20 rotates. May loosen. However, since the cylindrical wall portion 21 of the cap 20 is formed in a cylindrical shape, the cap 20 can be made difficult to rotate compared to the case where the outer peripheral surface of the cylindrical wall portion 21 has a corner. Therefore, since the cap 20 can be prevented from loosening, the contents can be prevented from leaking.

また、ボルト１０の第１係合部１６及びキャップ２０の第２係合部２６は、同一の正六角形状（図２（ａ）及び図２（ｂ）参照）に形成されるので、ボルト１０及びキャップ２０を締め付ける際に同一の工具を係合させることができる。一つの工具でボルト１０及びキャップ２０を締め付けることができるので、締結作業の効率を向上できる。   Moreover, since the 1st engaging part 16 of the volt | bolt 10 and the 2nd engaging part 26 of the cap 20 are formed in the same regular hexagon shape (refer FIG. 2 (a) and FIG.2 (b)), the volt | bolt 10 And the same tool can be engaged when the cap 20 is tightened. Since the bolt 10 and the cap 20 can be tightened with one tool, the efficiency of the fastening operation can be improved.

また、第１係合部１６が凹状に形成されるので、後述のように第１係合部１６が凸状に形成される場合と比べて、第２おねじ部１４と第２めねじ部２４とが螺合する面を確保することができる。よって、キャップ２０が緩むことを防止できるので、内容物が漏洩することを防止できる。   Moreover, since the 1st engaging part 16 is formed in concave shape, compared with the case where the 1st engaging part 16 is formed in convex shape as mentioned later, the 2nd external thread part 14 and the 2nd internal thread part It is possible to secure a surface with which 24 is screwed. Therefore, since the cap 20 can be prevented from loosening, the contents can be prevented from leaking.

さらに、第２係合部２６が凹状に形成されるので、後述のように第２係合部２６が凸状に形成される場合と比べて、第１係合部１６及び第２係合部２６に工具や小石等の物体を衝突させ難くできる。従って、締め付けられたキャップ２０に物体が衝突してキャップ２０が回転することを防止できるので、キャップ２０が緩むことを防止できる。よって、内容物が漏洩することを防止できる。   Furthermore, since the second engaging portion 26 is formed in a concave shape, the first engaging portion 16 and the second engaging portion are compared with a case where the second engaging portion 26 is formed in a convex shape as will be described later. It is possible to make it difficult for an object such as a tool or pebbles to collide with 26. Accordingly, it is possible to prevent the cap 20 from rotating due to an object colliding with the tightened cap 20, and thus it is possible to prevent the cap 20 from loosening. Therefore, the contents can be prevented from leaking.

次に図３、図４（ａ）及び図４（ｂ）を参照して第２実施の形態について説明する。第１実施の形態では、第１係合部１６及び第２係合部２６が正六角形状に凹み、ボルト１０が容器４に螺合する場合について説明した。これに対し第２実施の形態では、第１係合部１６及び第２係合部２６が正六角形状に突出し、ボルト１１０がナット１０５に螺合する場合について説明する。さらに、開口部２３の周縁部に溝部１２８を設け、その溝部１２８にＯリング１３０が嵌め込まれている場合について説明する。なお、第１実施の形態と同一の部分については、同一の符合を付して以下の説明を省略する。   Next, a second embodiment will be described with reference to FIGS. 3, 4A and 4B. In the first embodiment, the case where the first engaging portion 16 and the second engaging portion 26 are recessed in a regular hexagonal shape and the bolt 10 is screwed into the container 4 has been described. On the other hand, in 2nd Embodiment, the 1st engaging part 16 and the 2nd engaging part 26 protrude in a regular hexagon shape, and the case where the volt | bolt 110 screws together with the nut 105 is demonstrated. Furthermore, the case where the groove part 128 is provided in the peripheral part of the opening part 23, and the O-ring 130 is engage | inserted in the groove part 128 is demonstrated. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted.

図３は第２実施の形態におけるねじ部材１０１及び被締結部材１０２の断面図であり、図４（ａ）はボルト１１０の平面図であり、図４（ｂ）はキャップ１２０の平面図である。図３に示すようにねじ部材１０１は、被締結部材１０２を締結するボルト１１０と、ボルト１１０の頭部１１２に装着されるキャップ１２０と、キャップ１２０の開口部１２３の周縁部に形成される溝部１２８に嵌め込まれ、ゴム状弾性体から構成されるリング状のＯリング１３０とを備え、キャップ１２０と被締結部材１０２との間でＯリング１３０が圧接される。   3 is a cross-sectional view of the screw member 101 and the fastened member 102 in the second embodiment, FIG. 4 (a) is a plan view of the bolt 110, and FIG. 4 (b) is a plan view of the cap 120. . As shown in FIG. 3, the screw member 101 includes a bolt 110 that fastens the fastened member 102, a cap 120 that is attached to the head portion 112 of the bolt 110, and a groove portion that is formed at the peripheral portion of the opening 123 of the cap 120. And a ring-shaped O-ring 130 formed of a rubber-like elastic body, and the O-ring 130 is press-contacted between the cap 120 and the fastened member 102.

被締結部材１０２は、内容物が収容される容器１０４と、容器１０４に形成された容器開口部４ａを塞ぐカバー６と、容器１０４とカバー６との間に配設され、ゴム状弾性体から構成されるガスケット８と、容器１０４の内側に設けられるナット１０５とを備え、ナット１０５にはボルト１１０が螺合するためのねじ穴である第３めねじ部１０５ａが形成される。   The fastened member 102 is disposed between the container 104 in which the contents are stored, the cover 6 that closes the container opening 4 a formed in the container 104, and the container 104 and the cover 6. A gasket 8 to be configured and a nut 105 provided inside the container 104 are provided, and the nut 105 is formed with a third female screw portion 105a which is a screw hole into which the bolt 110 is screwed.

被締結部材１０２は、内側からナット１０５、容器１０４、ガスケット８、カバー６の順番で重なり、この重なる部分（容器開口部４ａの周囲）において、容器１０４にはボルト１１０が貫通するための容器貫通孔１０４ｂが複数設けられる。一方、カバー６及びガスケット８には、容器貫通孔１０４ｂよりも大きい径を有する第１拡大孔６ａ及び第２拡大孔８ａが、容器貫通孔１０４ｂに対応する位置にそれぞれ複数設けられる。また、第３めねじ部１０５ａと容器貫通孔１０４ｂとが同心になるように、容器１０４の内側にナット１０５が複数設置される。複数のボルト１１０が、第１拡大孔６ａ、第２拡大孔８ａ及び容器貫通孔１０４ｂに挿入されて第３めねじ部１０５ａに螺合することで、被締結部材１０２が締結される。   The to-be-fastened member 102 overlaps from the inside in the order of the nut 105, the container 104, the gasket 8, and the cover 6, and in this overlapping portion (around the container opening 4a), the container 104 penetrates the container 104 through which the bolt 110 passes. A plurality of holes 104b are provided. On the other hand, the cover 6 and the gasket 8 are provided with a plurality of first enlarged holes 6a and second enlarged holes 8a each having a diameter larger than that of the container through hole 104b, at positions corresponding to the container through holes 104b. In addition, a plurality of nuts 105 are installed inside the container 104 so that the third female screw portion 105a and the container through hole 104b are concentric. A plurality of bolts 110 are inserted into the first enlarged hole 6a, the second enlarged hole 8a, and the container through-hole 104b and screwed into the third female screw portion 105a, whereby the fastened member 102 is fastened.

ボルト１１０は、軸部１１と、第１拡大孔６ａよりも大きい径を有する円柱状の頭部１１２と、軸部１１の側面に設けられる第１おねじ部１３と、頭部１１２の側面に設けられる第２おねじ部１４と、頭部１１２の頂面１１５の中心に設けられ、平面視において正六角形状（図４（ａ）参照）に軸部１１と反対方向に突出する第１係合部１１６とを備えている。第１拡大孔６ａ、第２拡大孔８ａ及び容器貫通孔１０４ｂにボルト１１０の軸部１１を挿入させた状態で、第１係合部１１６にスパナ等の工具を係合してボルト１１０を回転させることで、軸部１１の第１おねじ部１３がナット１０５の第３めねじ部１０５ａに螺合する。ボルト１１０及びナット１０５により、容器１０４とカバー６とが締結されるので、容器１０４とカバー６との間に配設されるガスケット８が圧接される。その結果、容器１０４とカバー６との間から内容物が漏洩することを防止できる。   The bolt 110 includes a shaft portion 11, a columnar head portion 112 having a larger diameter than the first enlarged hole 6 a, a first male screw portion 13 provided on the side surface of the shaft portion 11, and a side surface of the head portion 112. A second male thread portion 14 provided and a first engagement provided at the center of the top surface 115 of the head portion 112 and projecting in a direction opposite to the shaft portion 11 in a regular hexagonal shape (see FIG. 4A) in plan view. And a joint part 116. With the shaft 11 of the bolt 110 inserted into the first enlarged hole 6a, the second enlarged hole 8a, and the container through-hole 104b, a tool such as a spanner is engaged with the first engaging part 116 to rotate the bolt 110. By doing so, the first male screw portion 13 of the shaft portion 11 is screwed into the third female screw portion 105 a of the nut 105. Since the container 104 and the cover 6 are fastened by the bolt 110 and the nut 105, the gasket 8 disposed between the container 104 and the cover 6 is pressed. As a result, the contents can be prevented from leaking from between the container 104 and the cover 6.

キャップ１２０は、円筒状に形成される筒壁部２１と、筒壁部２１の上端を閉じた閉塞部１２２と、筒壁部２１の下端を開口した開口部１２３と、筒壁部２１の内側に設けられる第２めねじ部２４と、閉塞部１２２の外側の中心に設けられ、第１係合部１６と同一形状に形成される（平面視において正六角形状（図４（ｂ）参照）に開口部１２３と反対側に突出する）第２係合部１２６とを備え、開口部１２３の周縁部には、Ｏリング１３０が嵌め込まれる溝部１２８が形成される。   The cap 120 includes a cylindrical wall portion 21 formed in a cylindrical shape, a closing portion 122 that closes the upper end of the cylindrical wall portion 21, an opening portion 123 that opens the lower end of the cylindrical wall portion 21, and the inner side of the cylindrical wall portion 21. Is formed in the same shape as the first engaging portion 16 (see FIG. 4B) in plan view. And a second engagement portion 126 projecting on the opposite side of the opening portion 123, and a groove portion 128 into which the O-ring 130 is fitted is formed on the peripheral portion of the opening portion 123.

第２係合部１２６にスパナ等の工具を係合してキャップ１２０を回転させることで、開口部１２３からボルト１１０の頭部１１２が挿入され、筒壁部２１の内側の第２めねじ部２４が頭部１１２の側面の第２おねじ部１４に螺合する。これにより、カバー６に向かってキャップ１２０が締め付けられるので、キャップ１２０の溝部１２８に嵌め込まれたＯリング１３０が、カバー６に向かって押し付けられて圧接される。その結果、キャップ１２０の内側と外側とが遮断されるので、第１おねじ部１３と第３めねじ部１０５ａとの隙間および頭部１１２の下面とカバー６との隙間を通って内容物が漏洩することを防止できる。   By engaging a tool such as a spanner with the second engagement portion 126 and rotating the cap 120, the head portion 112 of the bolt 110 is inserted from the opening portion 123, and the second female screw portion inside the cylindrical wall portion 21 is inserted. 24 is screwed into the second external thread portion 14 on the side surface of the head portion 112. As a result, the cap 120 is tightened toward the cover 6, so that the O-ring 130 fitted in the groove portion 128 of the cap 120 is pressed toward the cover 6 and pressed. As a result, the inner side and the outer side of the cap 120 are blocked, so that the contents pass through the gap between the first male screw portion 13 and the third female screw portion 105a and the gap between the lower surface of the head 112 and the cover 6. Leakage can be prevented.

また、キャップ１２０の筒壁部２１の径方向の厚さが均一の円筒状に形成され、筒壁部２１の径および軸方向の長さに比べて第２係合部１２６の径および軸方向の長さが小さいので、筒壁部２１の外周面に角がある場合と比べて、キャップ１２０を回転し難くすることができる。よって、キャップ１２０が緩むことを防止できるので、内容物が漏洩することを防止できる。   In addition, the cylindrical wall portion 21 of the cap 120 is formed in a cylindrical shape having a uniform thickness in the radial direction, and the diameter and the axial direction of the second engaging portion 126 compared to the diameter and the axial length of the cylindrical wall portion 21. Since the length of the cap 120 is small, the cap 120 can be made difficult to rotate as compared with the case where the outer peripheral surface of the cylindrical wall portion 21 has a corner. Therefore, since the cap 120 can be prevented from loosening, the contents can be prevented from leaking.

以上、実施の形態に基づき本発明を説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。例えば、上記実施の形態では、筒壁部２１が円筒状である場合について説明したが、必ずしもこれに限られるものではなく、筒壁部の径方向の厚さが均一の筒状であれば良く、例えば、筒壁部の開口部から閉塞部に向かって細くなる形状とすることは当然可能である。   The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed. For example, in the above-described embodiment, the case where the cylindrical wall portion 21 is cylindrical has been described. However, the present invention is not necessarily limited to this, and any cylindrical wall portion having a uniform radial thickness may be used. For example, it is naturally possible to make the shape narrower from the opening of the cylindrical wall portion toward the closing portion.

上記実施の形態では、シール部材であるガスケット８、シールワッシャ３０及びＯリング１３０がゴム状弾性体で構成される場合について説明したが、必ずしもこれに限られるものではなく、他の材質のシール部材を採用することは当然可能である。他の材質としては、例えば、金属、又は、金属とゴム状弾性体との複合体が挙げられる。   In the above embodiment, the case where the gasket 8, the seal washer 30, and the O-ring 130, which are seal members, are made of a rubber-like elastic body has been described. However, the present invention is not limited to this, and seal members of other materials are used. Of course, it is possible to adopt. Examples of the other material include a metal or a composite of a metal and a rubber-like elastic body.

上記実施の形態では、第１係合部１５，１１５及び第２係合部２６，１２６が同一の六角形状に凹む又は突出する場合について説明したが、必ずしもこれに限られるものではなく、同じ工具が係合可能であれば深さ又は高さを異ならせることは当然可能である。また、第１係合部および第２係合部の平面視における形状を異ならせることも可能である。例えば、第１係合部または第２係合部の一方を十字穴に形成し、他方をスリット溝に形成することで、両者にマイナスドライバを係合させることができる。   In the above-described embodiment, the case where the first engaging portions 15 and 115 and the second engaging portions 26 and 126 are recessed or protruded into the same hexagonal shape has been described. It is of course possible to vary the depth or height if the can be engaged. Moreover, it is also possible to make the shape in planar view of a 1st engaging part and a 2nd engaging part different. For example, by forming one of the first engaging portion or the second engaging portion in a cross hole and forming the other in a slit groove, a minus driver can be engaged with both.

１，１０１ ねじ部材
２，１０２ 被締結部材
４ｂ 第１めねじ部（貫通孔の一部）
６ａ 第１拡大孔（貫通孔の一部）
８ａ 第２拡大孔（貫通孔の一部）
１０，１１０ ボルト
１２，１１２ 頭部
１４ 第２おねじ部（おねじ部）
１５，１１５ 頂面
１６，１１６ 第１係合部
２０，１２０ キャップ
２１ 筒壁部
２２，１２２ 閉塞部
２３ 開口部
２４ 第２めねじ部（めねじ部）
２６，１２６ 第２係合部
３０ シールワッシャ（シール部材）
１０４ｂ 容器貫通孔（貫通孔の一部）
１３０ Ｏリング（シール部材）
1,101 Screw member 2,102 Fastened member 4b First female screw portion (part of through hole)
6a 1st enlarged hole (a part of through hole)
8a Second enlarged hole (part of through hole)
10,110 bolt 12,112 head 14 second male thread (male thread)
15, 115 Top surface 16, 116 First engagement part 20, 120 Cap 21 Tube wall part 22, 122 Closure part 23 Opening part 24 Second female thread part (female thread part)
26, 126 Second engaging portion 30 Seal washer (seal member)
104b Container through hole (part of through hole)
130 O-ring (seal member)

Claims (4)

円柱状の頭部を有し、被締結部材を貫通する貫通孔に挿入されて前記被締結部材を締結するボルトと、
軸心と垂直な面における径方向の厚さが均一の筒状に形成される筒壁部の両端のうち一端に閉塞部が設けられると共に他端に開口部が設けられ、その開口部から前記頭部を挿入させることで前記頭部に装着されるキャップと、
そのキャップが前記頭部に装着された状態で、前記開口部の周縁部と前記被締結部材との間で圧接されるシール部材とを備え、
前記ボルトは、前記頭部の側面に形成されるおねじ部と、前記頭部の頂面に工具が係合する第１係合部とを備え、
前記キャップは、前記筒壁部の内側に形成され、前記おねじ部に螺合するめねじ部と、前記閉塞部の外側に工具が係合する第２係合部とを備えていることを特徴とするねじ部材。 A bolt having a cylindrical head and inserted into a through-hole penetrating the fastened member to fasten the fastened member;
A blocking portion is provided at one end of both ends of the cylindrical wall portion formed in a cylindrical shape having a uniform radial thickness in a plane perpendicular to the axis, and an opening is provided at the other end. A cap attached to the head by inserting the head;
A seal member that is press-contacted between a peripheral portion of the opening and the fastened member in a state where the cap is mounted on the head;
The bolt includes a male thread portion formed on a side surface of the head, and a first engagement portion with which a tool engages with a top surface of the head.
The cap includes an internal thread portion that is formed on the inner side of the cylindrical wall portion and is screwed into the external thread portion, and a second engagement portion that engages with a tool on the outer side of the closing portion. A screw member. 前記第１係合部および前記第２係合部は、同一の工具が係合する形状に形成されることを特徴とする請求項１記載のねじ部材。   2. The screw member according to claim 1, wherein the first engagement portion and the second engagement portion are formed in a shape with which the same tool is engaged. 前記第１係合部および前記第２係合部は、前記被締結部材側に凹んだ形状に形成されることを特徴とする請求項１又は２に記載のねじ部材。   3. The screw member according to claim 1, wherein the first engagement portion and the second engagement portion are formed in a shape recessed toward the fastened member side. 請求項１から３のいずれかに記載のねじ部材を用いた被締結部材の締結構造であって、
前記被締結部材は、端部に容器開口部が形成され、内容物が収容される容器と、
前記容器開口部を塞ぐカバーとを備え、
前記容器と前記カバーとが重なる部分に複数の前記貫通孔が貫通され、複数の前記貫通孔に複数の前記ボルトをそれぞれ挿入して前記カバーと前記容器とを締結し、複数の前記ボルトの前記頭部に複数の前記キャップをそれぞれ装着することで、複数の前記キャップと前記カバーとの間で複数の前記シール部材がそれぞれ圧接されることを特徴とする被締結部材の締結構造。
It is the fastening structure of the to-be-fastened member using the screw member in any one of Claim 1 to 3,
The fastened member has a container opening at its end and a container in which contents are stored.
A cover for closing the container opening,
A plurality of the through holes are penetrated in a portion where the container and the cover overlap, and a plurality of the bolts are respectively inserted into the plurality of through holes to fasten the cover and the container, and the plurality of the bolts A fastening structure for a fastened member, wherein a plurality of the sealing members are pressed against each other between the plurality of caps and the cover by attaching the plurality of caps to the head.
JP2014215418A 2014-10-22 2014-10-22 Screw member and fastening structure of fastened member Pending JP2016080143A (en)

Priority Applications (1)

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Country Link
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56170317U (en) * 1980-05-19 1981-12-16
JPS62141915U (en) * 1986-03-03 1987-09-08
JPH0577609U (en) * 1992-03-19 1993-10-22 株式会社芝浦製作所 Fastener protection device
JP2012167716A (en) * 2011-02-10 2012-09-06 Mitsubishi Heavy Ind Ltd Bolt holding structure
JP2013194888A (en) * 2012-03-22 2013-09-30 Nabeya Bi-Tech Kk Screw member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56170317U (en) * 1980-05-19 1981-12-16
JPS62141915U (en) * 1986-03-03 1987-09-08
JPH0577609U (en) * 1992-03-19 1993-10-22 株式会社芝浦製作所 Fastener protection device
JP2012167716A (en) * 2011-02-10 2012-09-06 Mitsubishi Heavy Ind Ltd Bolt holding structure
JP2013194888A (en) * 2012-03-22 2013-09-30 Nabeya Bi-Tech Kk Screw member

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