JP3737891B2 - Automotive exhaust pipe connection jig - Google Patents

Automotive exhaust pipe connection jig Download PDF

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Publication number
JP3737891B2
JP3737891B2 JP29522598A JP29522598A JP3737891B2 JP 3737891 B2 JP3737891 B2 JP 3737891B2 JP 29522598 A JP29522598 A JP 29522598A JP 29522598 A JP29522598 A JP 29522598A JP 3737891 B2 JP3737891 B2 JP 3737891B2
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Japan
Prior art keywords
flange
exhaust pipe
slide arm
portions
pressing
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JP29522598A
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JP2000120434A (en
Inventor
龍男 齋藤
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Toyota Motor East Japan Inc
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Kanto Auto Works Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Exhaust Silencers (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、センタパイプと、テールパイプとの同一の菱形状のフランジ部を回転位置を揃えて対接させた状態で保持するための自動車の排気管連結用治具に関するものである。
【０００２】
【従来の技術】
図４に示すように、触媒コンバータに後続するセンタパイプ１と、消音器３ａが後続するテールパイプ３をボールジョイント５及びガスケットを介して連結する場合、双方の同一の菱形状のフランジ部２、４を次のようにねじ止めしている。即ち、それぞれボルト挿通孔２ａ、４ａを合わせて、ばね７が装着されたボルト６を挿通し、そのストッパ６ａをフランジ部４に当接させて反対側からナット止めしている。これにより、センタパイプ１及びテールパイプ３は、僅かに折り曲げれてもガスケットで気密状態を確保して連結される。つまり、走行時に連結部前後の排気管の上下の振動を吸収するように折れ曲がる。
【０００３】
このような連結はフランジ部２、４の回転位置が揃わないことによりボルト６がボルト挿通孔２ａの中心位置からずれていると、走行時にボルト挿通孔２ａの縁に干渉して異音が発生する問題がある。そこで、複数個の受駒を配列して双方のパイプを載置した状態で回転位置を調整することも行われているが、排気管の形状が異なるごとに受駒を交換する必要がある。このために、さらに図５に示すように、フランジ部２、４の菱形に対応した上下一対の山形の挟持フレーム９、９ａの一方の端部を開閉可能に枢着してばねで閉鎖方向へ付勢する治具が用いられている。
【０００４】
【発明が解決しようとする課題】
これにより、受駒を用いることなく、双方のフランジ部をその回転位置を合わせて対接させた状態でねじ止めできる。しかしながら、複数種類の配管に対してフランジ部の形状を共通にしておくのが前提となり、フランジ部の形状が異なると同様に交換する必要があり、また上下開閉式のために、治具を装着した状態で車両へ搭載した後に、上方へ隙間がないと、取付作業の終了後に外せなくなる場合もあった。
【０００５】
本発明は、このような点に鑑みて、形状の異なる菱形状のフランジ部に対して共通に使用できるスライド式の自動車の排気管連結用治具を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明は、この目的を達成するために、請求項１により、センタパイプと、テールパイプとの同一の菱形状のフランジ部を回転位置を揃えて対接させた状態で保持するための自動車の排気管連結用治具において、基部にスライドアームをスライド可能にガイドさせると共に、このスライドアームの先端部に、各フランジ部の対向するエッジ部の一方側に当接するようにスライド方向に対して直交する押圧面を有するフランジ押圧部を設け、押圧面に対してそれぞれ等距離位置で対面し、かつエッジ部の他方側を挿入させて挟持する空間部を置いて互いに平行に離間する上下一対のフランジ挟持部を基部に設けると共に、フランジ挟持部にそれぞれ断面円弧状の挟持領域を形成し、押圧面がフランジ挟持部へ向かうように、スライドアームを付勢するばねを基部に装着したことを特徴とする。
【０００７】
双方のフランジ部の一方側のエッジ部を上下一対のフランジ挟持部間の空間部に挿入された状態で、ばね力により他方のエッジ部に押圧面を当接させてフランジ押圧部で押圧される。その際、両側のエッジ部間の対角線に対してエッジ部は互いに対称形状であることにより、押圧によりフランジ押圧部の円弧状挟持領域に沿って双方の対角線が揃ってスライドアームに平行となるように移動し、対接させられた状態に保持される。
【０００８】
【発明の実施の形態】
図１乃至図３を基に本発明の実施の形態の一例による自動車の排気管連結用治具を説明する。この排気管連結用治具は、基部１０にスライドアーム１１をスライド可能にガイドさせると共に、このスライドアームの先端部に、前述のフランジ部２、４の一方側のエッジ部２ｂ、４ｂに当接するようにスライド方向に対して直交する押圧面１２ａを有するアーム状のフランジ押圧部１２が設けられ、押圧面１２ａに対してそれぞれ等距離位置で対面し、かつ対向する他方側のエッジ部２ｃ、４ｃを挿入させる空間部１５ｂを置いて互いに平行に離間する上下一対の丸棒状のフランジ挟持部１５、１５ａを基部１０に設けて構成されている。
【０００９】
フランジ挟持部１５、１５ａは、基部１０に立設されたブラケット１６の上下左右の側部アーム１６ａに支持されている。ばね１８が基部１０及びスライドアーム１１の端部に形成されたばね座１８ａ間に装着されることにより、エッジ部２ｃ、４ｃがフランジ挟持部１５、１５ａ間に挟持された状態において、押圧面１２ａがエッジ部２ｂ、４ｂに当接してフランジ挟持部１５、１５ａに向けて押圧するように、スライドアーム１１が付勢されている。２０はスライドアーム１１のスライド位置をクランプするためのクランパであり、スライドアーム１１に形成された曲面状の膨出部１１ａに当接する可動爪２１と、反対側で基部１０に固定された爪と、この固定爪にピン２２ａで枢支された可動爪２１をばね力に抗して開放操作するための両側一対のハンドル２２とで構成されている。
【００１０】
このように構成された自動車の排気管連結用治具の動作は次の通りである。スライドアーム１１をフランジ押圧部１２がばね力に抗して開いた状態にクランパ２０によりクランプしておき、図２に示すように、双方のフランジ部２、４のエッジ部２ｃ、４ｃを空間部１５ｂに挿入する。クランパ２０を開放してアンクランプ操作し、ばね力によりフランジ押圧部１２を押圧方向へスライドさせ、押圧面１２ａをエッジ部２ｂ、４ｂに当接させる。
【００１１】
これにより、菱形によりエッジ部２ｃ、４ｃ及びエッジ部２ｂ、４ｂ間の対角線に対してエッジ部２ｃ、４ｃは互いに対称形状であることにより、フランジ押圧部１２で押圧された状態では双方の対角線が揃ってスライドアーム１１に平行となり、ボルト挿通孔２ａ、４ａの回転位置はおのずと揃う。例えば、図３に示すように、上側から斜めに挿入されると、その上側のフランジ挟持部１５の円弧状挟持領域Ａ１の位置Ｐ２に接触し、次いで下側の挟持領域Ａ２の相対的に先方の位置Ｐ２に接触し、さらに押される過程で対向位置の隙間Ｓ１及びＳ２を無くすように移動する。これにより、最終的には、エッジ部の２ｃ、４ｃが挟持領域Ａ１、Ａ２に沿ってスムーズに回転力の働かない平行位置に回転する。
【００１２】
排気管連結用治具は、フランジ部２、４のねじ止めして排気管の車両への取付作業の終了後に、クランパ２０を開放して下方にずらすだけで外すことができる。フランジ部２、４の形状が異なる場合でもエッジ部２ｃ、４ｃの空間部１５ｂへの侵入量或はフランジ挟持部１５、１５ａがスライド位置が異なるだけで同様に対接状態に保持できる。
【００１３】
尚、フランジ挟持部は丸棒状で無く、挟持部の頂点位置から押圧面１２ａに向けて９０°もしくはさらに狭い範囲の挟持領域のみを円弧状にすることもできる。
【００１４】
【発明の効果】
以上、本発明のスライド式の排気管連結用治具によりフランジ形状の異なる複数種類の排気管に対して共用可能となり、また上方の構造へ干渉することなく、フランジ部から下方へ落として外すことができる。
【図面の簡単な説明】
【図１】本発明の実施の形態による自動車の排気管連結用治具の斜視図である。
【図２】同自動車の排気管連結用治具の動作を説明する正面図である。
【図３】同排気管連結用治具の動作を説明する図である。
【図４】同自動車の排気管連結用治具の作業対象となる排気管の連結作業を説明する斜視図である。
【図５】従来の自動車の排気管連結用治具の斜視図である。
【符号の説明】
１ センタパイプ
２、４ フランジ部
３ テールパイプ
１０ 基部
１１ スライドアーム
１２ フランジ押圧部
１２ａ 押圧面
１５、１５ａ フランジ挟持部
１５ｂ 空間部
Ａ１、Ａ２ 挟持領域[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile exhaust pipe connecting jig for holding the same diamond-shaped flange portion of a center pipe and a tail pipe in a state where they are in contact with each other with their rotational positions aligned.
[0002]
[Prior art]
As shown in FIG. 4, when the center pipe 1 following the catalytic converter and the tail pipe 3 followed by the silencer 3a are connected via a ball joint 5 and a gasket, both the same diamond-shaped flange portions 2, 4 is screwed as follows. That is, the bolt insertion holes 2a and 4a are respectively aligned, the bolt 6 on which the spring 7 is mounted is inserted, and the stopper 6a is brought into contact with the flange portion 4 to be fastened with a nut from the opposite side. Thereby, even if the center pipe 1 and the tail pipe 3 are bent slightly, the center pipe 1 and the tail pipe 3 are connected while securing an airtight state with the gasket. That is, it bends so as to absorb the vertical vibrations of the exhaust pipe before and after the connecting portion during traveling.
[0003]
In such a connection, if the bolt 6 is displaced from the center position of the bolt insertion hole 2a because the rotational positions of the flange portions 2 and 4 are not aligned, the noise is generated due to interference with the edge of the bolt insertion hole 2a during traveling. There is a problem to do. Therefore, it is also possible to adjust the rotational position in a state where a plurality of receiving pieces are arranged and both pipes are placed, but it is necessary to exchange the receiving pieces every time the shape of the exhaust pipe is different. For this purpose, as further shown in FIG. 5, one end of a pair of upper and lower chevron holding frames 9 and 9a corresponding to the diamonds of the flanges 2 and 4 is pivotally mounted so as to be openable and closable, and springs in the closing direction. A biasing jig is used.
[0004]
[Problems to be solved by the invention]
Thereby, both flange parts can be screwed in a state where the rotational positions are matched with each other without using a receiving piece. However, it is premised that the shape of the flange is common to multiple types of piping, and if the shape of the flange is different, it must be replaced in the same way. In some cases, after mounting in a vehicle, if there is no gap upward, it may not be possible to remove after completion of the mounting operation.
[0005]
In view of the above, an object of the present invention is to provide a slide-type automobile exhaust pipe connecting jig that can be used in common with rhombus flange portions having different shapes.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides, according to claim 1, an automobile for holding a center pipe and a tail pipe having the same rhombus-shaped flange portion in a state in which the rotation positions are aligned and in contact with each other. In the exhaust pipe connection jig, the slide arm is slidably guided to the base, and the slide arm is orthogonal to the slide direction so as to abut one end of the opposing edge of each flange. A pair of upper and lower flanges provided with flange pressing portions having pressing surfaces that face each other at equal distance positions with respect to the pressing surfaces and spaced apart in parallel with a space portion that is inserted and held on the other side of the edge portion. A clamping part is provided at the base, a clamping area is formed in each of the flange clamping parts, and a slide arm is attached so that the pressing surface faces the flange clamping part. A spring, characterized in that attached to the base.
[0007]
With one edge portion of both flange portions inserted into the space between the pair of upper and lower flange clamping portions, the pressing surface is brought into contact with the other edge portion by the spring force and is pressed by the flange pressing portion. . At that time, since the edge portions are symmetrical with respect to the diagonal line between the edge portions on both sides, both diagonal lines are aligned along the arcuate sandwiching region of the flange pressing portion and are parallel to the slide arm by pressing. And is held in contact with each other.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An automobile exhaust pipe connecting jig according to an example of an embodiment of the present invention will be described with reference to FIGS. 1 to 3. The exhaust pipe connection jig guides the slide arm 11 to be slidable on the base portion 10 and abuts the edge portions 2b and 4b on one side of the flange portions 2 and 4 at the distal end portion of the slide arm. In this way, the arm-shaped flange pressing portion 12 having the pressing surface 12a orthogonal to the sliding direction is provided, facing the pressing surface 12a at equidistant positions, and facing the opposite edge portions 2c, 4c. The base 10 is provided with a pair of upper and lower round bar-shaped flange pinching portions 15 and 15a that are spaced apart from each other with a space portion 15b for inserting a space 15b.
[0009]
The flange holding portions 15 and 15a are supported by the side arms 16a on the upper, lower, left and right sides of the bracket 16 erected on the base portion 10. When the spring 18 is mounted between the base 10 and the spring seat 18a formed at the end of the slide arm 11, the pressing surface 12a is in a state where the edge portions 2c and 4c are held between the flange holding portions 15 and 15a. The slide arm 11 is urged so as to abut against the edge portions 2b and 4b and to press the flange portions 15 and 15a. Reference numeral 20 denotes a clamper for clamping the slide position of the slide arm 11, a movable claw 21 that comes into contact with the curved bulged portion 11 a formed on the slide arm 11, and a claw fixed to the base 10 on the opposite side; The movable claw 21 pivotally supported by the fixed claw with a pin 22a is composed of a pair of handles 22 on both sides for opening the resist against the spring force.
[0010]
The operation of the automobile exhaust pipe connecting jig configured as described above is as follows. The slide arm 11 is clamped by the clamper 20 in a state in which the flange pressing portion 12 is opened against the spring force, and as shown in FIG. Insert into 15b. The clamper 20 is opened and unclamping is performed, and the flange pressing portion 12 is slid in the pressing direction by the spring force, and the pressing surface 12a is brought into contact with the edge portions 2b and 4b.
[0011]
Thereby, the edge portions 2c and 4c are symmetrical to each other with respect to the diagonal line between the edge portions 2c and 4c and the edge portions 2b and 4b by the rhombus, so that both diagonal lines are pressed in the state pressed by the flange pressing portion 12. They are all parallel to the slide arm 11, and the rotation positions of the bolt insertion holes 2a, 4a are naturally aligned. For example, as shown in FIG. 3, when it is inserted obliquely from the upper side, it comes into contact with the position P2 of the arc-shaped holding area A1 of the upper flange holding part 15 and is then relatively ahead of the lower holding area A2. In the process of further pressing, the gaps S1 and S2 at the opposing positions are moved away. As a result, the edge portions 2c and 4c eventually rotate to the parallel positions where the rotational force does not work smoothly along the sandwiching regions A1 and A2.
[0012]
The exhaust pipe connecting jig can be removed simply by screwing the flange portions 2 and 4 and completing the work of attaching the exhaust pipe to the vehicle by opening the clamper 20 and shifting it downward. Even when the shapes of the flange portions 2 and 4 are different, they can be similarly held in contact with each other only by the amount of penetration of the edge portions 2c and 4c into the space portion 15b or the slide positions of the flange holding portions 15 and 15a.
[0013]
Note that the flange clamping portion is not round bar-shaped, and only the clamping region of 90 ° or a narrower range from the apex position of the clamping portion toward the pressing surface 12a can be arcuate.
[0014]
【The invention's effect】
As described above, the slide-type exhaust pipe connecting jig of the present invention can be shared with a plurality of types of exhaust pipes having different flange shapes, and can be dropped and removed from the flange portion without interfering with the upper structure. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of an automobile exhaust pipe connecting jig according to an embodiment of the present invention.
FIG. 2 is a front view for explaining the operation of the exhaust pipe connecting jig of the vehicle.
FIG. 3 is a view for explaining the operation of the exhaust pipe connecting jig.
FIG. 4 is a perspective view for explaining an exhaust pipe connection operation that is an operation target of the exhaust pipe connection jig of the vehicle.
FIG. 5 is a perspective view of a conventional automobile exhaust pipe coupling jig.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Center pipe 2, 4 Flange part 3 Tail pipe 10 Base part 11 Slide arm 12 Flange press part 12a Press surface 15, 15a Flange clamping part 15b Space part A1, A2 Nipping area

Claims (1)

センタパイプと、テールパイプとの同一の菱形状のフランジ部を回転位置を揃えて対接させた状態で保持するための自動車の排気管連結用治具において、
基部にスライドアームをスライド可能にガイドさせると共に、このスライドアームの先端部に、各フランジ部の対向するエッジ部の一方側に当接するようにスライド方向に対して直交する押圧面を有するフランジ押圧部を設け、
前記押圧面に対してそれぞれ等距離位置で対面し、かつ前記エッジ部の他方側を挿入させて挟持する空間部を置いて互いに平行に離間する上下一対のフランジ挟持部を前記基部に設けると共に、前記フランジ挟持部にそれぞれ断面円弧状の挟持領域を形成し、
前記押圧面がフランジ挟持部へ向かうように、前記スライドアームを付勢するばねを前記基部に装着したことを特徴とする自動車の排気管連結用治具。In the automobile exhaust pipe connection jig for holding the same diamond-shaped flange portion of the center pipe and the tail pipe in a state of being in contact with each other with their rotational positions aligned,
A flange pressing portion having a sliding surface that guides the slide arm to the base portion, and a pressing surface orthogonal to the sliding direction so as to abut one end of the opposing edge portion of each flange portion at the tip of the slide arm Provided,
A pair of upper and lower flange holding portions that face each other at equal distance positions with respect to the pressing surface and that are spaced apart from each other by placing a space portion that is inserted and held on the other side of the edge portion are provided on the base portion, and Forming a clamping region having a circular arc cross section in each of the flange clamping portions;
A jig for connecting an exhaust pipe of an automobile, wherein a spring for urging the slide arm is attached to the base so that the pressing surface faces the flange clamping portion.
JP29522598A 1998-10-16 1998-10-16 Automotive exhaust pipe connection jig Expired - Fee Related JP3737891B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29522598A JP3737891B2 (en) 1998-10-16 1998-10-16 Automotive exhaust pipe connection jig

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Application Number Priority Date Filing Date Title
JP29522598A JP3737891B2 (en) 1998-10-16 1998-10-16 Automotive exhaust pipe connection jig

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JP2000120434A JP2000120434A (en) 2000-04-25
JP3737891B2 true JP3737891B2 (en) 2006-01-25

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100368151B1 (en) * 2000-11-30 2003-01-24 현대자동차주식회사 Jig for fabricating muffler of automobile
CN104084776B (en) * 2014-06-10 2016-06-01 北京卫星制造厂 A kind of positioning buffer unit being applicable to the assembling of space vehicle pipeline
CN108994751B (en) * 2018-08-13 2021-06-08 扬州新光机械有限公司 Vehicle chassis metal parts processing centre gripping subassembly
CN109514456B (en) * 2018-12-17 2020-11-03 江西汇丰管业有限公司 Fastening device for carrying large-scale drain pipe
CN113183030A (en) * 2021-05-10 2021-07-30 成都先进金属材料产业技术研究院股份有限公司 Metallographic specimen grinds anchor clamps

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