JP2003021126A - Bolt holding structure for flange - Google Patents

Bolt holding structure for flange

Info

Publication number
JP2003021126A
JP2003021126A JP2001206700A JP2001206700A JP2003021126A JP 2003021126 A JP2003021126 A JP 2003021126A JP 2001206700 A JP2001206700 A JP 2001206700A JP 2001206700 A JP2001206700 A JP 2001206700A JP 2003021126 A JP2003021126 A JP 2003021126A
Authority
JP
Japan
Prior art keywords
bolt
flange
fixed
holding structure
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001206700A
Other languages
Japanese (ja)
Inventor
Tomokazu Maekawa
友和 前川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Roki Co Ltd
Original Assignee
Tokyo Roki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Roki Co Ltd filed Critical Tokyo Roki Co Ltd
Priority to JP2001206700A priority Critical patent/JP2003021126A/en
Publication of JP2003021126A publication Critical patent/JP2003021126A/en
Pending legal-status Critical Current

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  • Exhaust Silencers (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a bolt holding structure for a flange saving labor of fixing a flange and a bolt by welding or the like, and at the same time capable of facilitating insertion of the bolt into a hole part of the counterpart flange by providing the bolt with a freedom of movement to some extent. SOLUTION: A bolt inserting hole part 21 is formed on the flange 20a, and the bolt 23 with a polygonal, for example hexagonal bolt head 22 is inserted in the bolt inserting hole part 21. The bolt head 22 is fit in a planar part 25 to which the flange 20a of a purifier 24 is fixed, and a hexagonal groove part 27 in which parallel parts 26 and 26 mutually facing opposite directions of the bolt head 22 is locked is formed on the planar part 25. In this state, a flange 20b fixed to one end of a pipe 29 is fit on the bolt 23, and the purifier muffler 24 and the pipe 29 can be joined by tightening a nut 31. When the nut 31 is tightened, in the bolt 23, the parallel parts 26 of the bolt head 22 are locked in the groove part 27 of the purifier 24 and rotation of the bolt head 22 is blocked.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は、接合される二つ
の部材を、それぞれに固着されたフランジをボルトによ
り締め付けることで接合する接合構造に用いられて好適
なフランジのボルト保持構造に関する.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flange bolt holding structure suitable for use in a joining structure in which two members to be joined are joined by tightening a flange fixed to each member with a bolt.

【0002】[0002]

【従来の技術】従来、一般に、接合される二つの部材
を、それぞれに固着されたフランジをボルトにより締め
付けることで接合する接合構造に用いられるフランジの
ボルト保持構造にあっては、例えば図4に示すように、
浄化マフラ1とパイプ2とを、それぞれに固着されたフ
ランジ3a,3bを図示しないパッキンを介して当接し
双方を貫通する複数本のボルト4で接続する場合、ボル
ト頭部5を押さえてその回転を防止する空間が少ないの
で、図5の拡大図に示すように、フランジ3aの孔部6
にボルト4を通した状態でボルト頭部5をフランジ3a
に溶接等で固着保持する構造がとられていた。
2. Description of the Related Art Conventionally, a bolt holding structure for a flange generally used in a joining structure for joining two members to be joined by tightening a flange fixed to each member with a bolt is shown in FIG. As shown
When connecting the purification muffler 1 and the pipe 2 with a plurality of bolts 4 that abut the flanges 3a and 3b fixed to each other via packings (not shown) and pass through them, press the bolt head 5 and rotate it. Since there is little space to prevent the hole 6 from being formed, as shown in the enlarged view of FIG.
With the bolt 4 passed through the
The structure is such that it is fixedly held by welding or the like.

【0003】そして、このようにボルト4が保持された
フランジ3aの中央孔7に浄化マフラ1の管部8を溶接
等で固着しておき、パイプ2のフランジ3bの孔にボル
ト4を挿通してナット9を締め付けて浄化マフラ1とパ
イプ2を接続していた。しかしながら、実際には以下に
説明する技術課題があった。
Then, the pipe portion 8 of the purification muffler 1 is fixed by welding or the like to the central hole 7 of the flange 3a in which the bolt 4 is held, and the bolt 4 is inserted into the hole of the flange 3b of the pipe 2. The nut 9 was tightened to connect the purification muffler 1 and the pipe 2. However, in reality, there were technical problems described below.

【0004】[0004]

【発明が解決しようとする課題】すなわち、上述した従
来のフランジのボルト保持構造は、ボルト頭部がフラン
ジに溶接等で固着されるために、固着に手間とコストが
かかるばかりでなく、ボルトがフランジに対して直角に
固着されていないと、相手側フランジの孔部にボルトが
挿入されず、またボルトが固着されて移動しないので相
手側フランジの孔部にボルトが挿入するときにボルトを
入れにくいという問題点があった。
That is, in the above-described conventional bolt holding structure for a flange, since the bolt head is fixed to the flange by welding or the like, not only is it troublesome and costly to fix the bolt, If it is not fixed at right angles to the flange, the bolt will not be inserted into the hole of the mating flange, and the bolt will be stuck and will not move, so insert the bolt when inserting the bolt into the hole of the mating flange. There was a problem that it was difficult.

【0005】この発明は、以上の問題点を解決するもの
であって、フランジとボルトを溶接等で固着する手間を
省くと同時に、ボルトにある程度の移動の自由度を持た
せて相手側フランジの孔部にボルトを挿入しやすくする
ことができるフランジのボルト保持構造を提供すること
を目的とする。
The present invention solves the above problems, and saves the labor of fixing the flange and the bolt by welding or the like, and at the same time gives the bolt a certain degree of freedom of movement so that An object of the present invention is to provide a bolt holding structure for a flange that facilitates insertion of a bolt into a hole.

【0006】[0006]

【課題を解決するための手段】前記目的を達成するため
に、この発明は、接合される二つの部材を、それぞれに
固着されたフランジをボルトにより締め付けることで接
合する接合構造に用いられるフランジのボルト保持構造
であって、頭部が多角形であるボルトを、一方の部材に
固着されたフランジのボルト挿通孔に挿入した状態で、
該頭部の回転を阻止する係止部を有する溝部に嵌入する
ことを特徴とするものである。
In order to achieve the above object, the present invention relates to a flange used in a joint structure for joining two members to be joined by fastening the flanges fixed to each other with bolts. In the bolt holding structure, the bolt having a polygonal head portion is inserted into the bolt insertion hole of the flange fixed to one member,
It is characterized in that it is fitted in a groove portion having a locking portion for preventing rotation of the head portion.

【0007】この発明においては、前記フランジのみが
一方の部材に溶接等により固着され、前記ボルトは一方
の部材及びフランジに対して非固着にあり、また、前記
溝部が形成される一方の部材の平面部に前記フランジが
固着されていたり、前記ボルト頭部及び溝部が六角形で
あることが好ましい。
In the present invention, only the flange is fixed to one member by welding or the like, the bolt is not fixed to the one member and the flange, and the bolt of one member having the groove is formed. It is preferable that the flange is fixed to the flat surface portion, or the bolt head portion and the groove portion are hexagonal.

【0008】[0008]

【発明の実施の形態】以下、この発明の好適な実施の形
態を図面を用いて詳細に説明する。図1〜3はこの発明
に係わるフランジのボルト保持構造を示している。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 show a flange bolt holding structure according to the present invention.

【0009】本実施の形態は、従来例と同様に、一方の
接合部材である浄化マフラ24と、他方の接合部材であ
るパイプ29とを、それぞれに固着されたフランジ20
a,20bを図示しないパッキンを介して当接し双方を
貫通する複数本のボルト4で接続する接合構造に用いて
好適なフランジのボルト保持構造に関するものである。
In this embodiment, similarly to the conventional example, the flange 20 having the purifying muffler 24, which is one joining member, and the pipe 29, which is the other joining member, fixed to each other.
The present invention relates to a flange bolt holding structure suitable for use in a joint structure in which a and 20b are brought into contact with each other through packing (not shown) and are connected by a plurality of bolts 4 penetrating both.

【0010】フランジ20aにはボルト挿通孔21が形
成され、ボルト挿通孔21にはボルト頭部22が多角
形、例えば六角形となっているボルト23が挿入されて
いる。そして、浄化マフラ24のフランジ20aが固着
される平面部25には、図2に示すように、ボルト頭部
22が嵌入され、かつボルト頭部22の互いに背反する
平行部26,26が係止される、ボルト頭部22と同じ
多角形(本実施の形態では六角形)の溝部27が、例え
ば鉄板28を折り曲げることにより形成されている。こ
れにより、ボルト頭部22が溝部27に係止されること
により、ボルト23の回転が阻止されることになる。
A bolt insertion hole 21 is formed in the flange 20a, and a bolt 23 having a polygonal bolt head 22 such as a hexagon is inserted into the bolt insertion hole 21. Then, as shown in FIG. 2, the bolt head 22 is fitted into the flat surface portion 25 to which the flange 20a of the purification muffler 24 is fixed, and the parallel portions 26, 26 of the bolt head 22 which are contradictory to each other are locked. The same polygonal (hexagonal in the present embodiment) groove 27 as the bolt head 22 is formed by bending an iron plate 28, for example. As a result, the bolt head 22 is locked in the groove 27, so that the rotation of the bolt 23 is blocked.

【0011】このようなフランジのボルト保持構造は、
浄化マフラ24の平面部25に形成された溝部27にボ
ルト23の頭部22を嵌入するとともに、ボルト23を
フランジ20aのボルト挿通孔に挿通した状態で、平面
部25にフランジ20aを溶接等により固着することで
構成される(図1を参照)。ボルト22は、フランジ2
0aによりその脱落が防止され、フランジ20aから突
出し、かつ、溝部27との嵌入隙間及びフランジ20a
のボルト挿通孔との隙間に応じて自由に移動することが
できる。
Such a flange bolt holding structure is
The head portion 22 of the bolt 23 is fitted into the groove portion 27 formed in the flat surface portion 25 of the purification muffler 24, and the flange 20a is welded to the flat surface portion 25 while the bolt 23 is inserted into the bolt insertion hole of the flange 20a. It is composed by sticking (see Fig. 1). The bolt 22 is the flange 2
0a prevents the flange 20a from falling off, projects from the flange 20a, and fits into the groove 27 and the flange 20a.
It is possible to move freely according to the gap between the bolt insertion hole and.

【0012】この状態で、フランジ20a,20bとほ
ぼ同径の図示しないパッキンをボルト23に挿入した
後、図3に示すように、パイプ29の一端に固着された
フランジ20bをボルト23に挿入し、ナット31を締
め付けて浄化マフラ24とパイプ29とを接合すること
ができる。ナット31を締め付けると、ボルト23はボ
ルト頭部22の平行部26が浄化マフラ24の溝部27
に係止されることでボルト頭部22の回転が阻止され
る。
In this state, a packing (not shown) having substantially the same diameter as the flanges 20a and 20b is inserted into the bolt 23, and then the flange 20b fixed to one end of the pipe 29 is inserted into the bolt 23 as shown in FIG. The nut 31 can be tightened to join the purification muffler 24 and the pipe 29. When the nut 31 is tightened, the bolt 23 has the parallel portion 26 of the bolt head 22 and the groove portion 27 of the purification muffler 24.
The bolt head 22 is prevented from rotating by being locked by the.

【0013】上記より、従来のように、ボルト23とフ
ランジ20aとを溶接等で固着する手間を省くと同時
に、ボルト23とフランジ20aとが固着されていない
ので、ボルト23にある程度の移動の自由度を持たせる
ことができて、パイプ29のフランジ挿通孔30にボル
ト23を挿入しやすいため、接合作業が容易である。
As described above, the bolt 23 and the flange 20a are not fixed to each other by welding or the like unlike the prior art, and at the same time, the bolt 23 and the flange 20a are not fixed to each other. Since the bolt 23 can be provided with a certain degree and the bolt 23 can be easily inserted into the flange insertion hole 30 of the pipe 29, the joining work is easy.

【0014】なお、本実施の形態では、接合される二つ
の部材として、浄化マフラ24とパイプ29とを示した
が、本発明はこの実施の形態に限定されるものではな
く、二つの部材のそれぞれに固着されたフランジをボル
トにより締め付けることで接合する接合構造一般に用い
ることができるものである。
Although the purifying muffler 24 and the pipe 29 are shown as the two members to be joined in the present embodiment, the present invention is not limited to this embodiment, and the two members are joined together. It can be generally used for joining structures in which flanges fixed to each other are fastened by bolts.

【0015】[0015]

【発明の効果】以上の構成によれば、接合される二つの
部材を、それぞれに固着されたフランジをボルトにより
締め付けることで接合する際に、フランジとボルトを溶
接等で固着する手間を省くと同時に、ボルトにある程度
の移動の自由度を持たせて相手側フランジの孔部にボル
トを挿入しやすくすることができ、接合作業が容易であ
る。
According to the above construction, when the two members to be joined are joined by tightening the flanges fastened to the respective members with bolts, it is possible to save the trouble of fastening the flanges and the bolts by welding or the like. At the same time, the bolt has a certain degree of freedom of movement so that the bolt can be easily inserted into the hole of the mating flange, and the joining work is easy.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明によるフランジのボルト保持構造の要
部を示す断面図である。
FIG. 1 is a sectional view showing a main part of a flange bolt holding structure according to the present invention.

【図2】図1のA−A断面図である。FIG. 2 is a sectional view taken along line AA of FIG.

【図3】図1に示すフランジのボルト保持構造の接合状
態を示す断面図である。
FIG. 3 is a cross-sectional view showing a joined state of the bolt holding structure for the flange shown in FIG.

【図4】従来のフランジのボルト保持構造の断面図であ
る。
FIG. 4 is a sectional view of a conventional flange bolt holding structure.

【図5】図4の要部拡大断面図である。5 is an enlarged cross-sectional view of the main parts of FIG.

【符号の説明】[Explanation of symbols]

20a フランジ 21 ボルト挿入孔部 22 ボルト頭部 23 ボルト 24 物品 25 平面部 26 平行部 27 溝部 20a flange 21 Bolt insertion hole 22 bolt head 23 Volts 24 articles 25 Plane 26 Parallel part 27 Groove

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 接合される二つの部材を、それぞれに固
着されたフランジをボルトにより締め付けることで接合
する接合構造に用いられるフランジのボルト保持構造で
あって、 頭部が多角形であるボルトを、一方の部材に固着された
フランジのボルト挿通孔に挿入した状態で、該頭部の回
転を阻止する係止部を有する溝部に嵌入することを特徴
とするフランジのボルト保持構造。
1. A bolt holding structure for a flange, which is used in a joining structure for joining two members to be joined by tightening a flange fixed to each member with a bolt, the bolt having a polygonal head portion. A flange bolt holding structure, characterized in that, while being inserted into a bolt insertion hole of a flange fixed to one member, the flange is fitted into a groove portion having a locking portion for preventing rotation of the head portion.
【請求項2】 前記フランジのみが一方の部材に溶接等
により固着され、前記ボルトは一方の部材及びフランジ
に対して非固着にあることを特徴とする請求項1に記載
のフランジのボルト保持構造。
2. The flange bolt holding structure according to claim 1, wherein only the flange is fixed to one member by welding or the like, and the bolt is not fixed to the one member and the flange. .
【請求項3】 前記溝部が形成される一方の部材の平面
部に前記フランジが固着されることを特徴とする請求項
1または2に記載のフランジのボルト保持構造。
3. The flange bolt holding structure according to claim 1, wherein the flange is fixed to a flat surface portion of one member in which the groove portion is formed.
【請求項4】 前記ボルト頭部及び溝部が六角形である
ことを特徴とする請求項1〜3のいずれかに記載のフラ
ンジのボルト保持構造。
4. The flange bolt holding structure according to claim 1, wherein the bolt head portion and the groove portion are hexagonal.
JP2001206700A 2001-07-06 2001-07-06 Bolt holding structure for flange Pending JP2003021126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001206700A JP2003021126A (en) 2001-07-06 2001-07-06 Bolt holding structure for flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001206700A JP2003021126A (en) 2001-07-06 2001-07-06 Bolt holding structure for flange

Publications (1)

Publication Number Publication Date
JP2003021126A true JP2003021126A (en) 2003-01-24

Family

ID=19042795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001206700A Pending JP2003021126A (en) 2001-07-06 2001-07-06 Bolt holding structure for flange

Country Status (1)

Country Link
JP (1) JP2003021126A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252312U (en) * 1985-09-21 1987-04-01
JPH08159134A (en) * 1994-12-09 1996-06-18 Mitsubishi Motors Corp Tightening device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252312U (en) * 1985-09-21 1987-04-01
JPH08159134A (en) * 1994-12-09 1996-06-18 Mitsubishi Motors Corp Tightening device

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